26047640 has 16 divisors (see below), whose sum is σ = 58607280. Its totient is φ = 10419040.

The previous prime is 26047639. The next prime is 26047649. The reversal of 26047640 is 4674062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26047649) 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, 325556 + ... + 325635.

It is an arithmetic number, because the mean of its divisors is an integer number (3662955).

Almost surely, 2^26047640 is an apocalyptic number.

26047640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26047640 is an abundant number, since it is smaller than the sum of its proper divisors (32559640).

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

26047640 is a wasteful number, since it uses less digits than its factorization.

26047640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651202 (or 651198 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 26047640 is about 5103.6888619899. The cubic root of 26047640 is about 296.4304365849.

The spelling of 26047640 in words is "twenty-six million, forty-seven thousand, six hundred forty".