22090761 has 48 divisors (see below), whose sum is σ = 40255488. Its totient is φ = 11340000.

The previous prime is 22090751. The next prime is 22090793. The reversal of 22090761 is 16709022.

It is not a de Polignac number, because 22090761 - 2⁵ = 22090729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22090751) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87886 + ... + 88136.

It is an arithmetic number, because the mean of its divisors is an integer number (838656).

Almost surely, 2^22090761 is an apocalyptic number.

22090761 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22090761 is a deficient number, since it is larger than the sum of its proper divisors (18164727).

22090761 is a wasteful number, since it uses less digits than its factorization.

22090761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 22090761 is about 4700.0809567496. The cubic root of 22090761 is about 280.5887314963.

Adding to 22090761 its reverse (16709022), we get a palindrome (38799783).

The spelling of 22090761 in words is "twenty-two million, ninety thousand, seven hundred sixty-one".