26578840 has 16 divisors (see below), whose sum is σ = 59802480. Its totient is φ = 10631520.

The previous prime is 26578831. The next prime is 26578879. The reversal of 26578840 is 4887562.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 664471 = 26578840 / (2 + 6 + 5 + 7 + 8 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 26578793 and 26578802.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 332196 + ... + 332275.

It is an arithmetic number, because the mean of its divisors is an integer number (3737655).

Almost surely, 2^26578840 is an apocalyptic number.

26578840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26578840 is an abundant number, since it is smaller than the sum of its proper divisors (33223640).

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

26578840 is a wasteful number, since it uses less digits than its factorization.

26578840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664482 (or 664478 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 26578840 is about 5155.4670011552. The cubic root of 26578840 is about 298.4319666655.

The spelling of 26578840 in words is "twenty-six million, five hundred seventy-eight thousand, eight hundred forty".