30645974 has 16 divisors (see below), whose sum is σ = 49420800. Its totient is φ = 14206824.

The previous prime is 30645931. The next prime is 30645991. The reversal of 30645974 is 47954603.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

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, 6794 + ... + 10365.

It is an arithmetic number, because the mean of its divisors is an integer number (3088800).

Almost surely, 2^30645974 is an apocalyptic number.

30645974 is a deficient number, since it is larger than the sum of its proper divisors (18774826).

30645974 is a wasteful number, since it uses less digits than its factorization.

30645974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17227.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 30645974 is about 5535.8805984233. The cubic root of 30645974 is about 312.9376447286.

The spelling of 30645974 in words is "thirty million, six hundred forty-five thousand, nine hundred seventy-four".