26215920 has 160 divisors (see below), whose sum is σ = 92404800. Its totient is φ = 6829056.

The previous prime is 26215919. The next prime is 26215949. The reversal of 26215920 is 2951262.

It is a super-2 number, since 2×26215920² = 1374548922892800, 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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114366 + ... + 114594.

It is an arithmetic number, because the mean of its divisors is an integer number (577530).

Almost surely, 2^26215920 is an apocalyptic number.

26215920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26215920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46202400).

26215920 is an abundant number, since it is smaller than the sum of its proper divisors (66188880).

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

26215920 is a wasteful number, since it uses less digits than its factorization.

26215920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 26215920 is about 5120.1484353483. The cubic root of 26215920 is about 297.0674267889.

The spelling of 26215920 in words is "twenty-six million, two hundred fifteen thousand, nine hundred twenty".