26788440 has 64 divisors (see below), whose sum is σ = 91848960. Its totient is φ = 6122880.

The previous prime is 26788429. The next prime is 26788451. The reversal of 26788440 is 4488762.

It is an interprime number because it is at equal distance from previous prime (26788429) and next prime (26788451).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15106 + ... + 16785.

It is an arithmetic number, because the mean of its divisors is an integer number (1435140).

Almost surely, 2^26788440 is an apocalyptic number.

26788440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26788440 is an abundant number, since it is smaller than the sum of its proper divisors (65060520).

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

26788440 is a wasteful number, since it uses less digits than its factorization.

26788440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31912 (or 31908 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 26788440 is about 5175.7550173864. The cubic root of 26788440 is about 299.2143889579.

The spelling of 26788440 in words is "twenty-six million, seven hundred eighty-eight thousand, four hundred forty".