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38634213332 = 221113523312907
BaseRepresentation
bin100011111110110001…
…110100111111010100
310200201111002101102002
4203332301310333110
51113110324311312
625425345134432
72535251252321
oct437661647724
9120644071362
1038634213332
1115426008330
1275a262a418
133849122780
141c27043b48
151011b4e4c2
hex8fec74fd4

38634213332 has 48 divisors (see below), whose sum is σ = 79451115072. Its totient is φ = 16205806080.

The previous prime is 38634213281. The next prime is 38634213341. The reversal of 38634213332 is 23331243683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2986823 + ... + 2999729.

It is an arithmetic number, because the mean of its divisors is an integer number (1655231564).

Almost surely, 238634213332 is an apocalyptic number.

It is an amenable number.

38634213332 is an abundant number, since it is smaller than the sum of its proper divisors (40816901740).

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

38634213332 is a wasteful number, since it uses less digits than its factorization.

38634213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18168 (or 18166 counting only the distinct ones).

The product of its digits is 186624, while the sum is 38.

The spelling of 38634213332 in words is "thirty-eight billion, six hundred thirty-four million, two hundred thirteen thousand, three hundred thirty-two".

Divisors: 1 2 4 11 13 22 26 44 52 143 286 572 5233 10466 12907 20932 25814 51628 57563 68029 115126 136058 141977 167791 230252 272116 283954 335582 567908 671164 748319 1496638 1845701 2993276 3691402 7382804 67542331 135084662 270169324 742965641 878050303 1485931282 1756100606 2971862564 3512201212 9658553333 19317106666 38634213332