26897220 has 72 divisors (see below), whose sum is σ = 93248064. Its totient is φ = 6147648.

The previous prime is 26897219. The next prime is 26897237. The reversal of 26897220 is 2279862.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9414 + ... + 11933.

It is an arithmetic number, because the mean of its divisors is an integer number (1295112).

Almost surely, 2^26897220 is an apocalyptic number.

26897220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26897220 is an abundant number, since it is smaller than the sum of its proper divisors (66350844).

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

26897220 is a wasteful number, since it uses less digits than its factorization.

26897220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21369 (or 21364 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 26897220 is about 5186.2529826456. The cubic root of 26897220 is about 299.6188492855.

The spelling of 26897220 in words is "twenty-six million, eight hundred ninety-seven thousand, two hundred twenty".