30732970 has 16 divisors (see below), whose sum is σ = 55521288. Its totient is φ = 12248320.

The previous prime is 30732943. The next prime is 30732973. The reversal of 30732970 is 7923703.

It can be written as a sum of positive squares in 4 ways, for example, as 30503529 + 229441 = 5523^2 + 479^2 .

It is not an unprimeable number, because it can be changed into a prime (30732973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2659 + ... + 8278.

Almost surely, 2^30732970 is an apocalyptic number.

30732970 is a deficient number, since it is larger than the sum of its proper divisors (24788318).

30732970 is a wasteful number, since it uses less digits than its factorization.

30732970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11225.

The product of its (nonzero) digits is 7938, while the sum is 31.

The square root of 30732970 is about 5543.7324971539. The cubic root of 30732970 is about 313.2334813361.

The spelling of 30732970 in words is "thirty million, seven hundred thirty-two thousand, nine hundred seventy".