15213012 has 24 divisors (see below), whose sum is σ = 35599200. Its totient is φ = 5056416.

The previous prime is 15213001. The next prime is 15213017. The reversal of 15213012 is 21031251.

It is a super-2 number, since 2×15213012² = 462871468224288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15212982 and 15213000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15213017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3039 + ... + 6297.

It is an arithmetic number, because the mean of its divisors is an integer number (1483300).

Almost surely, 2^15213012 is an apocalyptic number.

15213012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15213012 is an abundant number, since it is smaller than the sum of its proper divisors (20386188).

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

15213012 is a wasteful number, since it uses less digits than its factorization.

15213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655 (or 3653 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 15213012 is about 3900.3861347308. The cubic root of 15213012 is about 247.7831307350.

Adding to 15213012 its reverse (21031251), we get a palindrome (36244263).

The spelling of 15213012 in words is "fifteen million, two hundred thirteen thousand, twelve".