26864190 has 32 divisors (see below), whose sum is σ = 71638560. Its totient is φ = 7163712.

The previous prime is 26864177. The next prime is 26864191. The reversal of 26864190 is 9146862.

26864190 is a `hidden beast` number, since 2 + 6 + 8 + 641 + 9 + 0 = 666.

It is a super-2 number, since 2×26864190² = 1443369408712200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26864191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49479 + ... + 50018.

It is an arithmetic number, because the mean of its divisors is an integer number (2238705).

Almost surely, 2^26864190 is an apocalyptic number.

26864190 is an abundant number, since it is smaller than the sum of its proper divisors (44774370).

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

26864190 is a wasteful number, since it uses less digits than its factorization.

26864190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99513 (or 99507 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 26864190 is about 5183.0676244865. The cubic root of 26864190 is about 299.4961542720.

The spelling of 26864190 in words is "twenty-six million, eight hundred sixty-four thousand, one hundred ninety".