15440166 has 32 divisors (see below), whose sum is σ = 39214080. Its totient is φ = 4411368.

The previous prime is 15440143. The next prime is 15440167. The reversal of 15440166 is 66104451.

It is a super-2 number, since 2×15440166² = 476797452215112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20046 + ... + 20801.

It is an arithmetic number, because the mean of its divisors is an integer number (1225440).

Almost surely, 2^15440166 is an apocalyptic number.

15440166 is an abundant number, since it is smaller than the sum of its proper divisors (23773914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15440166 is a wasteful number, since it uses less digits than its factorization.

15440166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40865 (or 40859 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 15440166 is about 3929.3976637648. The cubic root of 15440166 is about 249.0103058588.

The spelling of 15440166 in words is "fifteen million, four hundred forty thousand, one hundred sixty-six".