26399044 has 27 divisors (see below), whose sum is σ = 53887743. Its totient is φ = 11283048.

The previous prime is 26399029. The next prime is 26399047. The reversal of 26399044 is 44099362.

The square root of 26399044 is 5138.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×26399044² = 1393819048227872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26398994 and 26399012.

It is not an unprimeable number, because it can be changed into a prime (26399047) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 71749 + ... + 72115.

Almost surely, 2^26399044 is an apocalyptic number.

26399044 is the 5138-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26399044

26399044 is an abundant number, since it is smaller than the sum of its proper divisors (27488699).

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

26399044 is an equidigital number, since it uses as much as digits as its factorization.

26399044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The cubic root of 26399044 is about 297.7575163602.

Multiplying 26399044 by its product of nonzero digits (46656), we get a square (1231673796864 = 1109808²).

The spelling of 26399044 in words is "twenty-six million, three hundred ninety-nine thousand, forty-four".