15120216 has 32 divisors (see below), whose sum is σ = 42001200. Its totient is φ = 5040000.

The previous prime is 15120187. The next prime is 15120227. The reversal of 15120216 is 61202151.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 34785 + ... + 35216.

Almost surely, 2^15120216 is an apocalyptic number.

It is an amenable number.

15120216 is an abundant number, since it is smaller than the sum of its proper divisors (26880984).

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

15120216 is a wasteful number, since it uses less digits than its factorization.

15120216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70016 (or 70006 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 15120216 is about 3888.4721935485. The cubic root of 15120216 is about 247.2782954930.

Adding to 15120216 its reverse (61202151), we get a palindrome (76322367).

The spelling of 15120216 in words is "fifteen million, one hundred twenty thousand, two hundred sixteen".