15421088 has 12 divisors (see below), whose sum is σ = 30360330. Its totient is φ = 7710528.

The previous prime is 15421061. The next prime is 15421093. The reversal of 15421088 is 88012451.

15421088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 14047504 + 1373584 = 3748^2 + 1172^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15421088.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240923 + ... + 240986.

Almost surely, 2^15421088 is an apocalyptic number.

It is an amenable number.

15421088 is a deficient number, since it is larger than the sum of its proper divisors (14939242).

15421088 is an equidigital number, since it uses as much as digits as its factorization.

15421088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481919 (or 481911 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 15421088 is about 3926.9693148788. The cubic root of 15421088 is about 248.9077038403.

The spelling of 15421088 in words is "fifteen million, four hundred twenty-one thousand, eighty-eight".