26656220 has 24 divisors (see below), whose sum is σ = 57909600. Its totient is φ = 10294592.

The previous prime is 26656219. The next prime is 26656229. The reversal of 26656220 is 2265662.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26656229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22400 + ... + 23559.

It is an arithmetic number, because the mean of its divisors is an integer number (2412900).

Almost surely, 2^26656220 is an apocalyptic number.

26656220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26656220 is an abundant number, since it is smaller than the sum of its proper divisors (31253380).

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

26656220 is a wasteful number, since it uses less digits than its factorization.

26656220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45997 (or 45995 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 26656220 is about 5162.9662017100. The cubic root of 26656220 is about 298.7212982236.

The spelling of 26656220 in words is "twenty-six million, six hundred fifty-six thousand, two hundred twenty".