30685812924 has 48 divisors (see below), whose sum is σ = 77265175680. Its totient is φ = 9422535360.

The previous prime is 30685812919. The next prime is 30685812929. The reversal of 30685812924 is 42921858603.

It is an interprime number because it is at equal distance from previous prime (30685812919) and next prime (30685812929).

It is a super-2 number, since 2×30685812924² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30685812929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123714 + ... + 276905.

It is an arithmetic number, because the mean of its divisors is an integer number (1609691160).

Almost surely, 2^30685812924 is an apocalyptic number.

It is an amenable number.

30685812924 is an abundant number, since it is smaller than the sum of its proper divisors (46579362756).

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

30685812924 is a wasteful number, since it uses less digits than its factorization.

30685812924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401130 (or 401128 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 30685812924 in words is "thirty billion, six hundred eighty-five million, eight hundred twelve thousand, nine hundred twenty-four".