26089728 has 144 divisors (see below), whose sum is σ = 83198976. Its totient is φ = 7096320.

The previous prime is 26089711. The next prime is 26089757. The reversal of 26089728 is 82798062.

It is a happy number.

It is a super-2 number, since 2×26089728² = 1361347814227968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 26089728.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123543 + ... + 123753.

Almost surely, 2^26089728 is an apocalyptic number.

26089728 is a gapful number since it is divisible by the number (28) 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 26089728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41599488).

26089728 is an abundant number, since it is smaller than the sum of its proper divisors (57109248).

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

26089728 is a wasteful number, since it uses less digits than its factorization.

26089728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 26089728 is about 5107.8104898283. The cubic root of 26089728 is about 296.5900089498.

The spelling of 26089728 in words is "twenty-six million, eighty-nine thousand, seven hundred twenty-eight".