26402040 has 96 divisors (see below), whose sum is σ = 98074080. Its totient is φ = 6034176.

The previous prime is 26402027. The next prime is 26402041. The reversal of 26402040 is 4020462.

26402040 is a `hidden beast` number, since 2 + 640 + 20 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26402041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2719 + ... + 7758.

It is an arithmetic number, because the mean of its divisors is an integer number (1021605).

Almost surely, 2^26402040 is an apocalyptic number.

26402040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26402040 is an abundant number, since it is smaller than the sum of its proper divisors (71672040).

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

26402040 is a wasteful number, since it uses less digits than its factorization.

26402040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10501 (or 10494 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 26402040 is about 5138.2915448620. The cubic root of 26402040 is about 297.7687799976.

The spelling of 26402040 in words is "twenty-six million, four hundred two thousand, forty".