26865920 has 72 divisors (see below), whose sum is σ = 65244480. Its totient is φ = 10598400.

The previous prime is 26865913. The next prime is 26865929. The reversal of 26865920 is 2956862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26865929) 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, 177845 + ... + 177995.

Almost surely, 2^26865920 is an apocalyptic number.

26865920 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 26865920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32622240).

26865920 is an abundant number, since it is smaller than the sum of its proper divisors (38378560).

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

26865920 is a wasteful number, since it uses less digits than its factorization.

26865920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 26865920 is about 5183.2345113838. The cubic root of 26865920 is about 299.5025831181.

The spelling of 26865920 in words is "twenty-six million, eight hundred sixty-five thousand, nine hundred twenty".