26620560 has 60 divisors (see below), whose sum is σ = 89403132. Its totient is φ = 7098624.

The previous prime is 26620549. The next prime is 26620567. The reversal of 26620560 is 6502662.

It can be written as a sum of positive squares in 2 ways, for example, as 7225344 + 19395216 = 2688^2 + 4404^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (26620567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17767 + ... + 19206.

Almost surely, 2^26620560 is an apocalyptic number.

26620560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26620560 is an abundant number, since it is smaller than the sum of its proper divisors (62782572).

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

26620560 is a wasteful number, since it uses less digits than its factorization.

26620560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36992 (or 36983 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 26620560 is about 5159.5116047936. The cubic root of 26620560 is about 298.5880315764.

The spelling of 26620560 in words is "twenty-six million, six hundred twenty thousand, five hundred sixty".