20497122 has 12 divisors (see below), whose sum is σ = 44410470. Its totient is φ = 6832368.

The previous prime is 20497093. The next prime is 20497129. The reversal of 20497122 is 22179402.

It can be written as a sum of positive squares in only one way, i.e., 12595401 + 7901721 = 3549^2 + 2811^2 .

It is not an unprimeable number, because it can be changed into a prime (20497129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 569347 + ... + 569382.

Almost surely, 2^20497122 is an apocalyptic number.

20497122 is an abundant number, since it is smaller than the sum of its proper divisors (23913348).

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

20497122 is a wasteful number, since it uses less digits than its factorization.

20497122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138737 (or 1138734 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 20497122 is about 4527.3747359811. The cubic root of 20497122 is about 273.6723755640.

The spelling of 20497122 in words is "twenty million, four hundred ninety-seven thousand, one hundred twenty-two".