26585220 has 96 divisors (see below), whose sum is σ = 77728896. Its totient is φ = 6784000.

The previous prime is 26585219. The next prime is 26585243. The reversal of 26585220 is 2258562.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248407 + ... + 248513.

It is an arithmetic number, because the mean of its divisors is an integer number (809676).

Almost surely, 2^26585220 is an apocalyptic number.

26585220 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 26585220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38864448).

26585220 is an abundant number, since it is smaller than the sum of its proper divisors (51143676).

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

26585220 is a wasteful number, since it uses less digits than its factorization.

26585220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 26585220 is about 5156.0857246559. The cubic root of 26585220 is about 298.4558433486.

The spelling of 26585220 in words is "twenty-six million, five hundred eighty-five thousand, two hundred twenty".