26513860 has 12 divisors (see below), whose sum is σ = 55679148. Its totient is φ = 10605536.

The previous prime is 26513857. The next prime is 26513881. The reversal of 26513860 is 6831562.

It can be written as a sum of positive squares in 2 ways, for example, as 13307904 + 13205956 = 3648^2 + 3634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662827 + ... + 662866.

It is an arithmetic number, because the mean of its divisors is an integer number (4639929).

Almost surely, 2^26513860 is an apocalyptic number.

26513860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26513860 is an abundant number, since it is smaller than the sum of its proper divisors (29165288).

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

26513860 is a wasteful number, since it uses less digits than its factorization.

26513860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325702 (or 1325700 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 26513860 is about 5149.1610967225. The cubic root of 26513860 is about 298.1885658501.

Adding to 26513860 its product of nonzero digits (8640), we get a square (26522500 = 5150²).

The spelling of 26513860 in words is "twenty-six million, five hundred thirteen thousand, eight hundred sixty".