13015428 has 36 divisors (see below), whose sum is σ = 31092432. Its totient is φ = 4237520.

The previous prime is 13015427. The next prime is 13015433. The reversal of 13015428 is 82451031.

It is a junction number, because it is equal to n+sod(n) for n = 13015398 and 13015407.

It is not an unprimeable number, because it can be changed into a prime (13015423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26263 + ... + 26753.

Almost surely, 2^13015428 is an apocalyptic number.

It is an amenable number.

13015428 is an abundant number, since it is smaller than the sum of its proper divisors (18077004).

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

13015428 is a wasteful number, since it uses less digits than its factorization.

13015428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 13015428 is about 3607.6901197304. The cubic root of 13015428 is about 235.2264483886.

Adding to 13015428 its reverse (82451031), we get a palindrome (95466459).

The spelling of 13015428 in words is "thirteen million, fifteen thousand, four hundred twenty-eight".