26572440 has 64 divisors (see below), whose sum is σ = 80755200. Its totient is φ = 6993792.

The previous prime is 26572421. The next prime is 26572453. The reversal of 26572440 is 4427562.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 26572398 and 26572407.

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 15 ways as a sum of consecutive naturals, for example, 8079 + ... + 10881.

It is an arithmetic number, because the mean of its divisors is an integer number (1261800).

Almost surely, 2^26572440 is an apocalyptic number.

26572440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26572440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40377600).

26572440 is an abundant number, since it is smaller than the sum of its proper divisors (54182760).

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

26572440 is a wasteful number, since it uses less digits than its factorization.

26572440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896 (or 2892 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 26572440 is about 5154.8462634690. The cubic root of 26572440 is about 298.4080112946.

The spelling of 26572440 in words is "twenty-six million, five hundred seventy-two thousand, four hundred forty".