20396994 has 16 divisors (see below), whose sum is σ = 42941280. Its totient is φ = 6441120.

The previous prime is 20396993. The next prime is 20397019. The reversal of 20396994 is 49969302.

It is not an unprimeable number, because it can be changed into a prime (20396993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89347 + ... + 89574.

It is an arithmetic number, because the mean of its divisors is an integer number (2683830).

Almost surely, 2^20396994 is an apocalyptic number.

20396994 is an abundant number, since it is smaller than the sum of its proper divisors (22544286).

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

20396994 is a wasteful number, since it uses less digits than its factorization.

20396994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178945.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 20396994 is about 4516.3031342017. The cubic root of 20396994 is about 273.2260200717.

The spelling of 20396994 in words is "twenty million, three hundred ninety-six thousand, nine hundred ninety-four".