26564172 has 48 divisors (see below), whose sum is σ = 65345280. Its totient is φ = 8382528.

The previous prime is 26564171. The next prime is 26564173. The reversal of 26564172 is 27146562.

It is an interprime number because it is at equal distance from previous prime (26564171) and next prime (26564173).

It is not an unprimeable number, because it can be changed into a prime (26564171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29643 + ... + 30525.

It is an arithmetic number, because the mean of its divisors is an integer number (1361360).

Almost surely, 2^26564172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26564172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32672640).

26564172 is an abundant number, since it is smaller than the sum of its proper divisors (38781108).

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

26564172 is a wasteful number, since it uses less digits than its factorization.

26564172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022 (or 1020 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 26564172 is about 5154.0442372956. The cubic root of 26564172 is about 298.3770582549.

The spelling of 26564172 in words is "twenty-six million, five hundred sixty-four thousand, one hundred seventy-two".