15264389 has 4 divisors (see below), whose sum is σ = 17445024. Its totient is φ = 13083756.

The previous prime is 15264349. The next prime is 15264397. The reversal of 15264389 is 98346251.

It is a happy number.

15264389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 15264389 - 2¹⁶ = 15198853 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 (15264329) 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, 1090307 + ... + 1090320.

It is an arithmetic number, because the mean of its divisors is an integer number (4361256).

Almost surely, 2^15264389 is an apocalyptic number.

It is an amenable number.

15264389 is a deficient number, since it is larger than the sum of its proper divisors (2180635).

15264389 is an equidigital number, since it uses as much as digits as its factorization.

15264389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180634.

The product of its digits is 51840, while the sum is 38.

The square root of 15264389 is about 3906.9667262468. The cubic root of 15264389 is about 248.0617529623.

The spelling of 15264389 in words is "fifteen million, two hundred sixty-four thousand, three hundred eighty-nine".