15225930 has 24 divisors (see below), whose sum is σ = 39587652. Its totient is φ = 4060224.

The previous prime is 15225877. The next prime is 15225941. The reversal of 15225930 is 3952251.

It can be written as a sum of positive squares in 2 ways, for example, as 14040009 + 1185921 = 3747^2 + 1089^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15225894 and 15225903.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84499 + ... + 84678.

Almost surely, 2^15225930 is an apocalyptic number.

15225930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15225930 is an abundant number, since it is smaller than the sum of its proper divisors (24361722).

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

15225930 is a wasteful number, since it uses less digits than its factorization.

15225930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169190 (or 169187 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 15225930 is about 3902.0417732259. The cubic root of 15225930 is about 247.8532452071.

The spelling of 15225930 in words is "fifteen million, two hundred twenty-five thousand, nine hundred thirty".