26220400 has 30 divisors (see below), whose sum is σ = 62995472. Its totient is φ = 10488000.

The previous prime is 26220377. The next prime is 26220419. The reversal of 26220400 is 402262.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32376 + ... + 33175.

Almost surely, 2^26220400 is an apocalyptic number.

26220400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26220400 is an abundant number, since it is smaller than the sum of its proper divisors (36775072).

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

26220400 is a wasteful number, since it uses less digits than its factorization.

26220400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65569 (or 65558 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 26220400 is about 5120.5859039762. The cubic root of 26220400 is about 297.0843476303.

Adding to 26220400 its reverse (402262), we get a palindrome (26622662).

The spelling of 26220400 in words is "twenty-six million, two hundred twenty thousand, four hundred".