26634420 has 120 divisors (see below), whose sum is σ = 85804488. Its totient is φ = 6912000.

The previous prime is 26634403. The next prime is 26634431. The reversal of 26634420 is 2443662.

26634420 is a `hidden beast` number, since 2 + 6 + 634 + 4 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3709476 + 22924944 = 1926^2 + 4788^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 66220 + ... + 66620.

Almost surely, 2^26634420 is an apocalyptic number.

26634420 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 26634420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42902244).

26634420 is an abundant number, since it is smaller than the sum of its proper divisors (59170068).

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

26634420 is a wasteful number, since it uses less digits than its factorization.

26634420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 26634420 is about 5160.8545803965. The cubic root of 26634420 is about 298.6398425589.

The spelling of 26634420 in words is "twenty-six million, six hundred thirty-four thousand, four hundred twenty".