30640932 has 36 divisors (see below), whose sum is σ = 88518976. Its totient is φ = 8754480.

The previous prime is 30640931. The next prime is 30640933. The reversal of 30640932 is 23904603.

It is an interprime number because it is at equal distance from previous prime (30640931) and next prime (30640933).

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 30640896 and 30640905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30640931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60544 + ... + 61047.

Almost surely, 2^30640932 is an apocalyptic number.

It is an amenable number.

30640932 is an abundant number, since it is smaller than the sum of its proper divisors (57878044).

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

30640932 is a wasteful number, since it uses less digits than its factorization.

30640932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121608 (or 121603 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 30640932 is about 5535.4251869211. The cubic root of 30640932 is about 312.9204818636.

The spelling of 30640932 in words is "thirty million, six hundred forty thousand, nine hundred thirty-two".