26380638 has 12 divisors (see below), whose sum is σ = 57158088. Its totient is φ = 8793540.

The previous prime is 26380621. The next prime is 26380639. The reversal of 26380638 is 83608362.

It is a super-2 number, since 2×26380638² = 1391876122574088, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26380639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 732778 + ... + 732813.

It is an arithmetic number, because the mean of its divisors is an integer number (4763174).

Almost surely, 2^26380638 is an apocalyptic number.

26380638 is an abundant number, since it is smaller than the sum of its proper divisors (30777450).

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

26380638 is a wasteful number, since it uses less digits than its factorization.

26380638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465599 (or 1465596 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 26380638 is about 5136.2085238043. The cubic root of 26380638 is about 297.6882992192.

The spelling of 26380638 in words is "twenty-six million, three hundred eighty thousand, six hundred thirty-eight".