26619920 has 20 divisors (see below), whose sum is σ = 61891500. Its totient is φ = 10647936.

The previous prime is 26619913. The next prime is 26619953. The reversal of 26619920 is 2991662.

It can be written as a sum of positive squares in 2 ways, for example, as 14868736 + 11751184 = 3856^2 + 3428^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 166295 + ... + 166454.

It is an arithmetic number, because the mean of its divisors is an integer number (3094575).

Almost surely, 2^26619920 is an apocalyptic number.

26619920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26619920 is an abundant number, since it is smaller than the sum of its proper divisors (35271580).

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

26619920 is a wasteful number, since it uses less digits than its factorization.

26619920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332762 (or 332756 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 26619920 is about 5159.4495830466. The cubic root of 26619920 is about 298.5856387158.

The spelling of 26619920 in words is "twenty-six million, six hundred nineteen thousand, nine hundred twenty".