15072989 has 4 divisors (see below), whose sum is σ = 15174300. Its totient is φ = 14971680.

The previous prime is 15072979. The next prime is 15072997. The reversal of 15072989 is 98927051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8076964 + 6996025 = 2842^2 + 2645^2 .

It is a cyclic number.

It is not a de Polignac number, because 15072989 - 2¹⁶ = 15007453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15072979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50432 + ... + 50729.

It is an arithmetic number, because the mean of its divisors is an integer number (3793575).

Almost surely, 2^15072989 is an apocalyptic number.

It is an amenable number.

15072989 is a deficient number, since it is larger than the sum of its proper divisors (101311).

15072989 is a wasteful number, since it uses less digits than its factorization.

15072989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101310.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 15072989 is about 3882.3947506661. The cubic root of 15072989 is about 247.0205744853.

It can be divided in two parts, 15072 and 989, that added together give a palindrome (16061).

The spelling of 15072989 in words is "fifteen million, seventy-two thousand, nine hundred eighty-nine".