26112640 has 32 divisors (see below), whose sum is σ = 62427060. Its totient is φ = 10444800.

The previous prime is 26112617. The next prime is 26112643. The reversal of 26112640 is 4621162.

It can be written as a sum of positive squares in 2 ways, for example, as 24840256 + 1272384 = 4984^2 + 1128^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (26112643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19761 + ... + 21040.

Almost surely, 2^26112640 is an apocalyptic number.

26112640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26112640 is an abundant number, since it is smaller than the sum of its proper divisors (36314420).

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

26112640 is an equidigital number, since it uses as much as digits as its factorization.

26112640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40820 (or 40808 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 26112640 is about 5110.0528373002. The cubic root of 26112640 is about 296.6768053318.

The spelling of 26112640 in words is "twenty-six million, one hundred twelve thousand, six hundred forty".