26378980 has 24 divisors (see below), whose sum is σ = 57307320. Its totient is φ = 10187520.

The previous prime is 26378941. The next prime is 26378993. The reversal of 26378980 is 8987362.

It can be written as a sum of positive squares in 4 ways, for example, as 484 + 26378496 = 22^2 + 5136^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22161 + ... + 23320.

It is an arithmetic number, because the mean of its divisors is an integer number (2387805).

Almost surely, 2^26378980 is an apocalyptic number.

26378980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26378980 is an abundant number, since it is smaller than the sum of its proper divisors (30928340).

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

26378980 is a wasteful number, since it uses less digits than its factorization.

26378980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45519 (or 45517 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 26378980 is about 5136.0471181639. The cubic root of 26378980 is about 297.6820626056.

The spelling of 26378980 in words is "twenty-six million, three hundred seventy-eight thousand, nine hundred eighty".