30157645728 has 192 divisors, whose sum is σ = 96308352000. Its totient is φ = 8070948864.

The previous prime is 30157645723. The next prime is 30157645753. The reversal of 30157645728 is 82754675103.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (30157645723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1123083 + ... + 1149621.

It is an arithmetic number, because the mean of its divisors is an integer number (501606000).

Almost surely, 2^30157645728 is an apocalyptic number.

30157645728 is a gapful number since it is divisible by the number (38) 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 30157645728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48154176000).

30157645728 is an abundant number, since it is smaller than the sum of its proper divisors (66150706272).

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

30157645728 is a wasteful number, since it uses less digits than its factorization.

30157645728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26667 (or 26659 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 30157645728 in words is "thirty billion, one hundred fifty-seven million, six hundred forty-five thousand, seven hundred twenty-eight".