30974540 has 24 divisors (see below), whose sum is σ = 65340240. Its totient is φ = 12333888.

The previous prime is 30974539. The next prime is 30974597. The reversal of 30974540 is 4547903.

It is a junction number, because it is equal to n+sod(n) for n = 30974497 and 30974506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199 + ... + 7961.

It is an arithmetic number, because the mean of its divisors is an integer number (2722510).

Almost surely, 2^30974540 is an apocalyptic number.

It is an amenable number.

30974540 is an abundant number, since it is smaller than the sum of its proper divisors (34365700).

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

30974540 is a wasteful number, since it uses less digits than its factorization.

30974540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001 (or 6999 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30974540 is about 5565.4775176978. The cubic root of 30974540 is about 314.0520421672.

The spelling of 30974540 in words is "thirty million, nine hundred seventy-four thousand, five hundred forty".