15630328 has 32 divisors (see below), whose sum is σ = 34277760. Its totient is φ = 6541920.

The previous prime is 15630313. The next prime is 15630337. The reversal of 15630328 is 82303651.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 15630296 and 15630305.

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, 838 + ... + 5653.

It is an arithmetic number, because the mean of its divisors is an integer number (1071180).

Almost surely, 2^15630328 is an apocalyptic number.

It is an amenable number.

15630328 is an abundant number, since it is smaller than the sum of its proper divisors (18647432).

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

15630328 is a wasteful number, since it uses less digits than its factorization.

15630328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6547 (or 6543 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 15630328 is about 3953.5209623828. The cubic root of 15630328 is about 250.0284127707.

Adding to 15630328 its reverse (82303651), we get a palindrome (97933979).

The spelling of 15630328 in words is "fifteen million, six hundred thirty thousand, three hundred twenty-eight".