30680892 has 36 divisors (see below), whose sum is σ = 84605976. Its totient is φ = 9297120.

The previous prime is 30680891. The next prime is 30680893. The reversal of 30680892 is 29808603.

It is an interprime number because it is at equal distance from previous prime (30680891) and next prime (30680893).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30680891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38343 + ... + 39134.

It is an arithmetic number, because the mean of its divisors is an integer number (2350166).

Almost surely, 2^30680892 is an apocalyptic number.

It is an amenable number.

30680892 is an abundant number, since it is smaller than the sum of its proper divisors (53925084).

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

30680892 is a wasteful number, since it uses less digits than its factorization.

30680892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77498 (or 77493 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30680892 is about 5539.0334896984. The cubic root of 30680892 is about 313.0564532565.

The spelling of 30680892 in words is "thirty million, six hundred eighty thousand, eight hundred ninety-two".