26487864 has 64 divisors (see below), whose sum is σ = 79245600. Its totient is φ = 8149248.

The previous prime is 26487859. The next prime is 26487889. The reversal of 26487864 is 46878462.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1909 + ... + 7524.

Almost surely, 2^26487864 is an apocalyptic number.

26487864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26487864 is an abundant number, since it is smaller than the sum of its proper divisors (52757736).

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

26487864 is a wasteful number, since it uses less digits than its factorization.

26487864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9461 (or 9451 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 26487864 is about 5146.6361829840. The cubic root of 26487864 is about 298.0910791674.

The spelling of 26487864 in words is "twenty-six million, four hundred eighty-seven thousand, eight hundred sixty-four".