26864400 has 120 divisors (see below), whose sum is σ = 87704704. Its totient is φ = 7027200.

The previous prime is 26864399. The next prime is 26864413. The reversal of 26864400 is 446862.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73017 + ... + 73383.

Almost surely, 2^26864400 is an apocalyptic number.

26864400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26864400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43852352).

26864400 is an abundant number, since it is smaller than the sum of its proper divisors (60840304).

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

26864400 is a wasteful number, since it uses less digits than its factorization.

26864400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 438 counting only the distinct ones).

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

The square root of 26864400 is about 5183.0878827201. The cubic root of 26864400 is about 299.4969346669.

The spelling of 26864400 in words is "twenty-six million, eight hundred sixty-four thousand, four hundred".