30428814 has 16 divisors (see below), whose sum is σ = 65539152. Its totient is φ = 9362688.

The previous prime is 30428807. The next prime is 30428831. The reversal of 30428814 is 41882403.

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, 194979 + ... + 195134.

It is an arithmetic number, because the mean of its divisors is an integer number (4096197).

Almost surely, 2^30428814 is an apocalyptic number.

30428814 is an abundant number, since it is smaller than the sum of its proper divisors (35110338).

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

30428814 is a wasteful number, since it uses less digits than its factorization.

30428814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390131.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 30428814 is about 5516.2318660477. The cubic root of 30428814 is about 312.1967242247.

The spelling of 30428814 in words is "thirty million, four hundred twenty-eight thousand, eight hundred fourteen".