26853864 has 16 divisors (see below), whose sum is σ = 67134720. Its totient is φ = 8951280.

The previous prime is 26853839. The next prime is 26853877. The reversal of 26853864 is 46835862.

It is a super-2 number, since 2×26853864² = 1442260023460992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559432 + ... + 559479.

It is an arithmetic number, because the mean of its divisors is an integer number (4195920).

Almost surely, 2^26853864 is an apocalyptic number.

26853864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26853864 is an abundant number, since it is smaller than the sum of its proper divisors (40280856).

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

26853864 is a wasteful number, since it uses less digits than its factorization.

26853864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118920 (or 1118916 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 26853864 is about 5182.0714005116. The cubic root of 26853864 is about 299.4577761235.

The spelling of 26853864 in words is "twenty-six million, eight hundred fifty-three thousand, eight hundred sixty-four".