26780790 has 32 divisors (see below), whose sum is σ = 65844576. Its totient is φ = 6967040.

The previous prime is 26780783. The next prime is 26780791. The reversal of 26780790 is 9708762.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26780791) 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, 9657 + ... + 12116.

It is an arithmetic number, because the mean of its divisors is an integer number (2057643).

Almost surely, 2^26780790 is an apocalyptic number.

26780790 is an abundant number, since it is smaller than the sum of its proper divisors (39063786).

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

26780790 is a wasteful number, since it uses less digits than its factorization.

26780790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21824.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 26780790 is about 5175.0159420044. The cubic root of 26780790 is about 299.1859039347.

The spelling of 26780790 in words is "twenty-six million, seven hundred eighty thousand, seven hundred ninety".