15428901 has 4 divisors (see below), whose sum is σ = 20571872. Its totient is φ = 10285932.

The previous prime is 15428891. The next prime is 15428909. The reversal of 15428901 is 10982451.

It is a happy number.

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 15428901 - 2¹⁰ = 15427877 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 (15428909) 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, 2571481 + ... + 2571486.

It is an arithmetic number, because the mean of its divisors is an integer number (5142968).

Almost surely, 2^15428901 is an apocalyptic number.

It is an amenable number.

15428901 is a deficient number, since it is larger than the sum of its proper divisors (5142971).

15428901 is an equidigital number, since it uses as much as digits as its factorization.

15428901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142970.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 15428901 is about 3927.9639764132. The cubic root of 15428901 is about 248.9497325989.

The spelling of 15428901 in words is "fifteen million, four hundred twenty-eight thousand, nine hundred one".