26890556 has 36 divisors (see below), whose sum is σ = 59122224. Its totient is φ = 10475520.

The previous prime is 26890553. The next prime is 26890559. The reversal of 26890556 is 65509862.

It is an interprime number because it is at equal distance from previous prime (26890553) and next prime (26890559).

It is a super-3 number, since 3×26890556³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26890553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 581 + ... + 7356.

It is an arithmetic number, because the mean of its divisors is an integer number (1642284).

Almost surely, 2^26890556 is an apocalyptic number.

It is an amenable number.

26890556 is an abundant number, since it is smaller than the sum of its proper divisors (32231668).

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

26890556 is a wasteful number, since it uses less digits than its factorization.

26890556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7970 (or 7957 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 26890556 is about 5185.6104751514. The cubic root of 26890556 is about 299.5941029247.

The spelling of 26890556 in words is "twenty-six million, eight hundred ninety thousand, five hundred fifty-six".