26721164 has 12 divisors (see below), whose sum is σ = 46824624. Its totient is φ = 13342704.

The previous prime is 26721137. The next prime is 26721179. The reversal of 26721164 is 46112762.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767 + ... + 7350.

It is an arithmetic number, because the mean of its divisors is an integer number (3902052).

Almost surely, 2^26721164 is an apocalyptic number.

It is an amenable number.

26721164 is a deficient number, since it is larger than the sum of its proper divisors (20103460).

26721164 is a wasteful number, since it uses less digits than its factorization.

26721164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8944 (or 8942 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 26721164 is about 5169.2517833822. The cubic root of 26721164 is about 298.9636984597.

The spelling of 26721164 in words is "twenty-six million, seven hundred twenty-one thousand, one hundred sixty-four".