30992004 has 48 divisors (see below), whose sum is σ = 81471040. Its totient is φ = 10186560.

The previous prime is 30991993. The next prime is 30992009. The reversal of 30992004 is 40029903.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30992009) 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, 5919 + ... + 9849.

Almost surely, 2^30992004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30992004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40735520).

30992004 is an abundant number, since it is smaller than the sum of its proper divisors (50479036).

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

30992004 is a wasteful number, since it uses less digits than its factorization.

30992004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017 (or 4009 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30992004 is about 5567.0462545231. The cubic root of 30992004 is about 314.1110537986. Note that the first 3 decimals are identical.

The spelling of 30992004 in words is "thirty million, nine hundred ninety-two thousand, four".