26490380 has 36 divisors (see below), whose sum is σ = 64714608. Its totient is φ = 9082080.

The previous prime is 26490377. The next prime is 26490391. The reversal of 26490380 is 8309462.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12536 + ... + 14495.

It is an arithmetic number, because the mean of its divisors is an integer number (1797628).

Almost surely, 2^26490380 is an apocalyptic number.

26490380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26490380 is an abundant number, since it is smaller than the sum of its proper divisors (38224228).

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

26490380 is a wasteful number, since it uses less digits than its factorization.

26490380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27054 (or 27045 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 26490380 is about 5146.8806086794. The cubic root of 26490380 is about 298.1005171174.

The spelling of 26490380 in words is "twenty-six million, four hundred ninety thousand, three hundred eighty".