26636420 has 12 divisors (see below), whose sum is σ = 55936524. Its totient is φ = 10654560.

The previous prime is 26636419. The next prime is 26636513. The reversal of 26636420 is 2463662.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 23367556 = 1808^2 + 4834^2 .

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, 665891 + ... + 665930.

It is an arithmetic number, because the mean of its divisors is an integer number (4661377).

Almost surely, 2^26636420 is an apocalyptic number.

26636420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26636420 is an abundant number, since it is smaller than the sum of its proper divisors (29300104).

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

26636420 is a wasteful number, since it uses less digits than its factorization.

26636420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331830 (or 1331828 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 26636420 is about 5161.0483431179. The cubic root of 26636420 is about 298.6473174070.

The spelling of 26636420 in words is "twenty-six million, six hundred thirty-six thousand, four hundred twenty".