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38620184020 = 225111131553507
BaseRepresentation
bin100011111101111100…
…010011110111010100
310200200111200121210221
4203331330103313110
51113043231342040
625424124324124
72535021101455
oct437574236724
9120614617727
1038620184020
11154190a5960
1275999a3644
13384624cbc2
141c2523112c
1510107cc74a
hex8fdf13dd4

38620184020 has 48 divisors (see below), whose sum is σ = 89258355648. Its totient is φ = 13919413760.

The previous prime is 38620184011. The next prime is 38620184023. The reversal of 38620184020 is 2048102683.

It is a super-2 number, since 2×386201840202 (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 (38620184023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 751894 + ... + 801613.

It is an arithmetic number, because the mean of its divisors is an integer number (1859549076).

Almost surely, 238620184020 is an apocalyptic number.

It is an amenable number.

38620184020 is an abundant number, since it is smaller than the sum of its proper divisors (50638171628).

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

38620184020 is a wasteful number, since it uses less digits than its factorization.

38620184020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553640 (or 1553638 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 38620184020 in words is "thirty-eight billion, six hundred twenty million, one hundred eighty-four thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 113 220 226 452 565 1130 1243 2260 2486 4972 6215 12430 24860 1553507 3107014 6214028 7767535 15535070 17088577 31070140 34177154 68354308 85442885 170885770 175546291 341771540 351092582 702185164 877731455 1755462910 1931009201 3510925820 3862018402 7724036804 9655046005 19310092010 38620184020