26530440 has 32 divisors (see below), whose sum is σ = 79591680. Its totient is φ = 7074752.

The previous prime is 26530433. The next prime is 26530453. The reversal of 26530440 is 4403562.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 26530440.

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, 110424 + ... + 110663.

It is an arithmetic number, because the mean of its divisors is an integer number (2487240).

Almost surely, 2^26530440 is an apocalyptic number.

26530440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26530440 is an abundant number, since it is smaller than the sum of its proper divisors (53061240).

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

26530440 is a wasteful number, since it uses less digits than its factorization.

26530440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221101 (or 221097 counting only the distinct ones).

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

The square root of 26530440 is about 5150.7708161012. The cubic root of 26530440 is about 298.2507086469.

The spelling of 26530440 in words is "twenty-six million, five hundred thirty thousand, four hundred forty".