30923540 has 24 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 12320288.

The previous prime is 30923537. The next prime is 30923597. The reversal of 30923540 is 4532903.

It is a super-2 number, since 2×30923540² = 1912530652263200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321 + ... + 8199.

It is an arithmetic number, because the mean of its divisors is an integer number (2716560).

Almost surely, 2^30923540 is an apocalyptic number.

It is an amenable number.

30923540 is an abundant number, since it is smaller than the sum of its proper divisors (34273900).

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

30923540 is a wasteful number, since it uses less digits than its factorization.

30923540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6151 (or 6149 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 30923540 is about 5560.8938130484. The cubic root of 30923540 is about 313.8795838327.

The spelling of 30923540 in words is "thirty million, nine hundred twenty-three thousand, five hundred forty".