30640976 has 40 divisors (see below), whose sum is σ = 61064544. Its totient is φ = 14889600.

The previous prime is 30640969. The next prime is 30640979. The reversal of 30640976 is 67904603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30640979) 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, 108131 + ... + 108413.

Almost surely, 2^30640976 is an apocalyptic number.

It is an amenable number.

30640976 is a deficient number, since it is larger than the sum of its proper divisors (30423568).

30640976 is a wasteful number, since it uses less digits than its factorization.

30640976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 30640976 is about 5535.4291613207. The cubic root of 30640976 is about 312.9206316468.

The spelling of 30640976 in words is "thirty million, six hundred forty thousand, nine hundred seventy-six".