26998440 has 64 divisors (see below), whose sum is σ = 92568960. Its totient is φ = 6170880.

The previous prime is 26998421. The next prime is 26998451. The reversal of 26998440 is 4489962.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 26998392 and 26998401.

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, 15231 + ... + 16910.

It is an arithmetic number, because the mean of its divisors is an integer number (1446390).

Almost surely, 2^26998440 is an apocalyptic number.

26998440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26998440 is an abundant number, since it is smaller than the sum of its proper divisors (65570520).

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

26998440 is a wasteful number, since it uses less digits than its factorization.

26998440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32162 (or 32158 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 26998440 is about 5196.0023094683. The cubic root of 26998440 is about 299.9942221109.

The spelling of 26998440 in words is "twenty-six million, nine hundred ninety-eight thousand, four hundred forty".