26863680 has 56 divisors (see below), whose sum is σ = 85295232. Its totient is φ = 7163392.

The previous prime is 26863679. The next prime is 26863687. The reversal of 26863680 is 8636862.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (26863687) 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, 13032 + ... + 14951.

Almost surely, 2^26863680 is an apocalyptic number.

26863680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26863680 is an abundant number, since it is smaller than the sum of its proper divisors (58431552).

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

26863680 is a wasteful number, since it uses less digits than its factorization.

26863680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28003 (or 27993 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 26863680 is about 5183.0184255895. The cubic root of 26863680 is about 299.4942590104.

The spelling of 26863680 in words is "twenty-six million, eight hundred sixty-three thousand, six hundred eighty".