26304540 has 24 divisors (see below), whose sum is σ = 73652880. Its totient is φ = 7014528.

The previous prime is 26304539. The next prime is 26304563. The reversal of 26304540 is 4540362.

It is a super-2 number, since 2×26304540² = 1383857649223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26304540.

It is a congruent number.

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, 219145 + ... + 219264.

It is an arithmetic number, because the mean of its divisors is an integer number (3068870).

Almost surely, 2^26304540 is an apocalyptic number.

26304540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26304540 is an abundant number, since it is smaller than the sum of its proper divisors (47348340).

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

26304540 is a wasteful number, since it uses less digits than its factorization.

26304540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438421 (or 438419 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 26304540 is about 5128.7951801568. The cubic root of 26304540 is about 297.4017847767.

The spelling of 26304540 in words is "twenty-six million, three hundred four thousand, five hundred forty".