13430628 has 18 divisors (see below), whose sum is σ = 33949734. Its totient is φ = 4476864.

The previous prime is 13430617. The next prime is 13430633. The reversal of 13430628 is 82603431.

It is a happy number.

13430628 is a `hidden beast` number, since 1 + 3 + 4 + 30 + 628 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13264164 + 166464 = 3642^2 + 408^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186501 + ... + 186572.

Almost surely, 2^13430628 is an apocalyptic number.

13430628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13430628 is an abundant number, since it is smaller than the sum of its proper divisors (20519106).

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

13430628 is a wasteful number, since it uses less digits than its factorization.

13430628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373083 (or 373078 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13430628 is about 3664.7821217639. The cubic root of 13430628 is about 237.7016009379.

The spelling of 13430628 in words is "thirteen million, four hundred thirty thousand, six hundred twenty-eight".