30251534840 has 16 divisors (see below), whose sum is σ = 68065953480. Its totient is φ = 12100613920.

The previous prime is 30251534801. The next prime is 30251534843. The reversal of 30251534840 is 4843515203.

It is a self number, because there is not a number n which added to its sum of digits gives 30251534840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30251534843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 378144146 + ... + 378144225.

Almost surely, 2^30251534840 is an apocalyptic number.

It is an amenable number.

30251534840 is an abundant number, since it is smaller than the sum of its proper divisors (37814418640).

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

30251534840 is a wasteful number, since it uses less digits than its factorization.

30251534840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756288382 (or 756288378 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 30251534840 in words is "thirty billion, two hundred fifty-one million, five hundred thirty-four thousand, eight hundred forty".