26412640 has 24 divisors (see below), whose sum is σ = 62400240. Its totient is φ = 10564992.

The previous prime is 26412601. The next prime is 26412643. The reversal of 26412640 is 4621462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26412643) 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, 82380 + ... + 82699.

It is an arithmetic number, because the mean of its divisors is an integer number (2600010).

Almost surely, 2^26412640 is an apocalyptic number.

26412640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26412640 is an abundant number, since it is smaller than the sum of its proper divisors (35987600).

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

26412640 is a wasteful number, since it uses less digits than its factorization.

26412640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165094 (or 165086 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 26412640 is about 5139.3229126024. The cubic root of 26412640 is about 297.8086244787.

The spelling of 26412640 in words is "twenty-six million, four hundred twelve thousand, six hundred forty".