30646428 has 12 divisors (see below), whose sum is σ = 71508360. Its totient is φ = 10215472.

The previous prime is 30646409. The next prime is 30646457. The reversal of 30646428 is 82464603.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276923 + ... + 1276946.

It is an arithmetic number, because the mean of its divisors is an integer number (5959030).

Almost surely, 2^30646428 is an apocalyptic number.

It is an amenable number.

30646428 is an abundant number, since it is smaller than the sum of its proper divisors (40861932).

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

30646428 is a wasteful number, since it uses less digits than its factorization.

30646428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553876 (or 2553874 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 30646428 is about 5535.9216034911. The cubic root of 30646428 is about 312.9391900429.

The spelling of 30646428 in words is "thirty million, six hundred forty-six thousand, four hundred twenty-eight".