30640416 has 48 divisors (see below), whose sum is σ = 83934144. Its totient is φ = 9768704.

The previous prime is 30640399. The next prime is 30640417. The reversal of 30640416 is 61404603.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (30640417) 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, 4731 + ... + 9146.

It is an arithmetic number, because the mean of its divisors is an integer number (1748628).

Almost surely, 2^30640416 is an apocalyptic number.

It is an amenable number.

30640416 is an abundant number, since it is smaller than the sum of its proper divisors (53293728).

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

30640416 is a wasteful number, since it uses less digits than its factorization.

30640416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13913 (or 13905 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30640416 is about 5535.3785778391. The cubic root of 30640416 is about 312.9187253039.

The spelling of 30640416 in words is "thirty million, six hundred forty thousand, four hundred sixteen".