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20090883312 = 2432139520023
BaseRepresentation
bin10010101101100000…
…101000110011110000
31220212011112121201100
4102231200220303300
5312121231231222
613121333204400
71310604455553
oct225540506360
956764477640
1020090883312
11857a863aa5
123a88490700
131b82478946
14d883c269a
157c8c1e4ac
hex4ad828cf0

20090883312 has 30 divisors (see below), whose sum is σ = 56226569672. Its totient is φ = 6696961056.

The previous prime is 20090883287. The next prime is 20090883317. The reversal of 20090883312 is 21338809002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20090883317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69759868 + ... + 69760155.

Almost surely, 220090883312 is an apocalyptic number.

It is an amenable number.

20090883312 is an abundant number, since it is smaller than the sum of its proper divisors (36135686360).

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

20090883312 is a wasteful number, since it uses less digits than its factorization.

20090883312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139520037 (or 139520028 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 20090883312 in words is "twenty billion, ninety million, eight hundred eighty-three thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 139520023 279040046 418560069 558080092 837120138 1116160184 1255680207 1674240276 2232320368 2511360414 3348480552 5022720828 6696961104 10045441656 20090883312