15489072 has 30 divisors (see below), whose sum is σ = 43348292. Its totient is φ = 5162976.

The previous prime is 15489053. The next prime is 15489077. The reversal of 15489072 is 27098451.

It is a super-2 number, since 2×15489072² = 479822702842368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (15489077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53638 + ... + 53925.

Almost surely, 2^15489072 is an apocalyptic number.

15489072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15489072 is an abundant number, since it is smaller than the sum of its proper divisors (27859220).

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

15489072 is a wasteful number, since it uses less digits than its factorization.

15489072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107577 (or 107568 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 15489072 is about 3935.6158349107. The cubic root of 15489072 is about 249.2729382413.

The spelling of 15489072 in words is "fifteen million, four hundred eighty-nine thousand, seventy-two".