26362640 has 20 divisors (see below), whose sum is σ = 61293324. Its totient is φ = 10545024.

The previous prime is 26362639. The next prime is 26362649. The reversal of 26362640 is 4626362.

It can be written as a sum of positive squares in 2 ways, for example, as 16224784 + 10137856 = 4028^2 + 3184^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26362649) 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, 164687 + ... + 164846.

Almost surely, 2^26362640 is an apocalyptic number.

26362640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26362640 is an abundant number, since it is smaller than the sum of its proper divisors (34930684).

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

26362640 is a wasteful number, since it uses less digits than its factorization.

26362640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329546 (or 329540 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 26362640 is about 5134.4561542582. The cubic root of 26362640 is about 297.6205852528.

The spelling of 26362640 in words is "twenty-six million, three hundred sixty-two thousand, six hundred forty".