26288880 has 40 divisors (see below), whose sum is σ = 81496272. Its totient is φ = 7010304.

The previous prime is 26288879. The next prime is 26288887. The reversal of 26288880 is 8888262.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×26288880² = 1382210423308800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26288887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54529 + ... + 55008.

Almost surely, 2^26288880 is an apocalyptic number.

26288880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26288880 is an abundant number, since it is smaller than the sum of its proper divisors (55207392).

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

26288880 is a wasteful number, since it uses less digits than its factorization.

26288880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109553 (or 109547 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The square root of 26288880 is about 5127.2682785281. The cubic root of 26288880 is about 297.3427552141.

The spelling of 26288880 in words is "twenty-six million, two hundred eighty-eight thousand, eight hundred eighty".