26404440828 has 24 divisors (see below), whose sum is σ = 64853013120. Its totient is φ = 8338244400.

The previous prime is 26404440823. The next prime is 26404440857. The reversal of 26404440828 is 82804440462.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 26404440828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26404440823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57904248 + ... + 57904703.

It is an arithmetic number, because the mean of its divisors is an integer number (2702208880).

Almost surely, 2^26404440828 is an apocalyptic number.

It is an amenable number.

26404440828 is an abundant number, since it is smaller than the sum of its proper divisors (38448572292).

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

26404440828 is a wasteful number, since it uses less digits than its factorization.

26404440828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115808977 (or 115808975 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 42.

The spelling of 26404440828 in words is "twenty-six billion, four hundred four million, four hundred forty thousand, eight hundred twenty-eight".