26040438 has 24 divisors (see below), whose sum is σ = 56581200. Its totient is φ = 8655504.

The previous prime is 26040433. The next prime is 26040449. The reversal of 26040438 is 83404062.

It is a super-2 number, since 2×26040438² = 1356208822463688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26040433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5143 + ... + 8861.

It is an arithmetic number, because the mean of its divisors is an integer number (2357550).

Almost surely, 2^26040438 is an apocalyptic number.

26040438 is an abundant number, since it is smaller than the sum of its proper divisors (30540762).

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

26040438 is a wasteful number, since it uses less digits than its factorization.

26040438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116 (or 4113 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 26040438 is about 5102.9832451224. The cubic root of 26040438 is about 296.4031137155.

The spelling of 26040438 in words is "twenty-six million, forty thousand, four hundred thirty-eight".