30719857252 has 24 divisors (see below), whose sum is σ = 61482669696. Its totient is φ = 13156448448.

The previous prime is 30719857249. The next prime is 30719857271. The reversal of 30719857252 is 25275891703.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30719857196 and 30719857205.

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, 342688 + ... + 422935.

It is an arithmetic number, because the mean of its divisors is an integer number (2561777904).

Almost surely, 2^30719857252 is an apocalyptic number.

It is an amenable number.

30719857252 is an abundant number, since it is smaller than the sum of its proper divisors (30762812444).

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

30719857252 is a wasteful number, since it uses less digits than its factorization.

30719857252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767067 (or 767065 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 30719857252 in words is "thirty billion, seven hundred nineteen million, eight hundred fifty-seven thousand, two hundred fifty-two".