26301640 has 32 divisors (see below), whose sum is σ = 61090560. Its totient is φ = 10180800.

The previous prime is 26301619. The next prime is 26301659. The reversal of 26301640 is 4610362.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

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, 9366 + ... + 11845.

It is an arithmetic number, because the mean of its divisors is an integer number (1909080).

Almost surely, 2^26301640 is an apocalyptic number.

26301640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26301640 is an abundant number, since it is smaller than the sum of its proper divisors (34788920).

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

26301640 is a wasteful number, since it uses less digits than its factorization.

26301640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21253 (or 21249 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 26301640 is about 5128.5124548937. The cubic root of 26301640 is about 297.3908551441.

The spelling of 26301640 in words is "twenty-six million, three hundred one thousand, six hundred forty".