26989722 has 12 divisors (see below), whose sum is σ = 58477770. Its totient is φ = 8996568.

The previous prime is 26989717. The next prime is 26989751. The reversal of 26989722 is 22798962.

It can be written as a sum of positive squares in only one way, i.e., 24890121 + 2099601 = 4989^2 + 1449^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749697 + ... + 749732.

Almost surely, 2^26989722 is an apocalyptic number.

26989722 is an abundant number, since it is smaller than the sum of its proper divisors (31488048).

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

26989722 is a wasteful number, since it uses less digits than its factorization.

26989722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499437 (or 1499434 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 26989722 is about 5195.1633275577. The cubic root of 26989722 is about 299.9619285021.

The spelling of 26989722 in words is "twenty-six million, nine hundred eighty-nine thousand, seven hundred twenty-two".