26400648 has 16 divisors (see below), whose sum is σ = 66001680. Its totient is φ = 8800208.

The previous prime is 26400631. The next prime is 26400653. The reversal of 26400648 is 84600462.

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, 549990 + ... + 550037.

It is an arithmetic number, because the mean of its divisors is an integer number (4125105).

Almost surely, 2^26400648 is an apocalyptic number.

It is an amenable number.

26400648 is an abundant number, since it is smaller than the sum of its proper divisors (39601032).

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

26400648 is a wasteful number, since it uses less digits than its factorization.

26400648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100036 (or 1100032 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 26400648 is about 5138.1560894936. The cubic root of 26400648 is about 297.7635467981.

The spelling of 26400648 in words is "twenty-six million, four hundred thousand, six hundred forty-eight".