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30157060320 = 25335113163379
BaseRepresentation
bin11100000101100000…
…000011100011100000
32212211200211101122000
4130011200003203200
5443230201412240
621504242244000
72115214532442
oct340540034340
985750741560
1030157060320
1111875968852
125a17656600
132ac7a967ba
141661250492
15bb7800430
hex7058038e0

30157060320 has 384 divisors, whose sum is σ = 107419737600. Its totient is φ = 7900913664.

The previous prime is 30157060303. The next prime is 30157060321. The reversal of 30157060320 is 2306075103.

It is a happy number.

30157060320 is a `hidden beast` number, since 3 + 0 + 1 + 57 + 0 + 603 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30157060321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79569891 + ... + 79570269.

It is an arithmetic number, because the mean of its divisors is an integer number (279738900).

Almost surely, 230157060320 is an apocalyptic number.

30157060320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30157060320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53709868800).

30157060320 is an abundant number, since it is smaller than the sum of its proper divisors (77262677280).

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

30157060320 is a wasteful number, since it uses less digits than its factorization.

30157060320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The spelling of 30157060320 in words is "thirty billion, one hundred fifty-seven million, sixty thousand, three hundred twenty".