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38885369628 = 22372172228829
BaseRepresentation
bin100100001101101111…
…111010011100011100
310201100222200110002010
4210031233322130130
51114114123312003
625510320231220
72544421121400
oct441557723434
9121328613063
1038885369628
1115544860816
12765276b510
13388917b571
141c4c541100
151028c11003
hex90dbfa71c

38885369628 has 108 divisors (see below), whose sum is σ = 112120292760. Its totient is φ = 10456524288.

The previous prime is 38885369623. The next prime is 38885369711. The reversal of 38885369628 is 82696358883.

It is a super-2 number, since 2×388853696282 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38885369623) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55518 + ... + 284346.

Almost surely, 238885369628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38885369628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56060146380).

38885369628 is an abundant number, since it is smaller than the sum of its proper divisors (73234923132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38885369628 is a wasteful number, since it uses less digits than its factorization.

38885369628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228884 (or 228858 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 66.

The spelling of 38885369628 in words is "thirty-eight billion, eight hundred eighty-five million, three hundred sixty-nine thousand, six hundred twenty-eight".

Divisors: 1 2 3 4 6 7 12 14 17 21 28 34 42 49 51 68 84 98 102 119 147 196 204 238 289 294 357 476 578 588 714 833 867 1156 1428 1666 1734 2023 2499 3332 3468 4046 4998 6069 8092 9996 12138 14161 24276 28322 42483 56644 84966 169932 228829 457658 686487 915316 1372974 1601803 2745948 3203606 3890093 4805409 6407212 7780186 9610818 11212621 11670279 15560372 19221636 22425242 23340558 27230651 33637863 44850484 46681116 54461302 66131581 67275726 81691953 108922604 132263162 134551452 163383906 190614557 198394743 264526324 326767812 381229114 396789486 462921067 571843671 762458228 793578972 925842134 1143687342 1388763201 1851684268 2287374684 2777526402 3240447469 5555052804 6480894938 9721342407 12961789876 19442684814 38885369628