20983422 has 16 divisors (see below), whose sum is σ = 42339600. Its totient is φ = 6932352.

The previous prime is 20983399. The next prime is 20983439. The reversal of 20983422 is 22438902.

It is a self number, because there is not a number n which added to its sum of digits gives 20983422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14797 + ... + 16152.

It is an arithmetic number, because the mean of its divisors is an integer number (2646225).

Almost surely, 2^20983422 is an apocalyptic number.

20983422 is an abundant number, since it is smaller than the sum of its proper divisors (21356178).

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

20983422 is a wasteful number, since it uses less digits than its factorization.

20983422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31067.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20983422 is about 4580.7665297415. The cubic root of 20983422 is about 275.8197994067.

The spelling of 20983422 in words is "twenty million, nine hundred eighty-three thousand, four hundred twenty-two".