15440164 has 6 divisors (see below), whose sum is σ = 27020294. Its totient is φ = 7720080.

The previous prime is 15440143. The next prime is 15440167. The reversal of 15440164 is 46104451.

15440164 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., 14379264 + 1060900 = 3792^2 + 1030^2 .

It is not an unprimeable number, because it can be changed into a prime (15440167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930017 + ... + 1930024.

Almost surely, 2^15440164 is an apocalyptic number.

It is an amenable number.

15440164 is a deficient number, since it is larger than the sum of its proper divisors (11580130).

15440164 is a wasteful number, since it uses less digits than its factorization.

15440164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860045 (or 3860043 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 15440164 is about 3929.3974092728. The cubic root of 15440164 is about 249.0102951072.

The spelling of 15440164 in words is "fifteen million, four hundred forty thousand, one hundred sixty-four".