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38979428000 = 25539744857
BaseRepresentation
bin100100010011010110…
…101101111010100000
310201121112200002220112
4210103112231322200
51114312213144000
625523520230452
72546642446142
oct442326557240
9121545602815
1038979428000
1115592964207
12767a16b428
1338a27c17c6
141c5ac26c92
1510320e0235
hex9135adea0

38979428000 has 48 divisors (see below), whose sum is σ = 95772464424. Its totient is φ = 15591769600.

The previous prime is 38979427937. The next prime is 38979428011. The reversal of 38979428000 is 82497983.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5711127184 + 33268300816 = 75572^2 + 182396^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 38979428000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4868429 + ... + 4876428.

Almost surely, 238979428000 is an apocalyptic number.

It is an amenable number.

38979428000 is an abundant number, since it is smaller than the sum of its proper divisors (56793036424).

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

38979428000 is an equidigital number, since it uses as much as digits as its factorization.

38979428000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9744882 (or 9744864 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 38979428000 in words is "thirty-eight billion, nine hundred seventy-nine million, four hundred twenty-eight thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 800 1000 2000 4000 9744857 19489714 38979428 48724285 77958856 97448570 155917712 194897140 243621425 311835424 389794280 487242850 779588560 974485700 1218107125 1559177120 1948971400 2436214250 3897942800 4872428500 7795885600 9744857000 19489714000 38979428000