20206992 has 120 divisors (see below), whose sum is σ = 58817664. Its totient is φ = 5970432.

The previous prime is 20206987. The next prime is 20207003. The reversal of 20206992 is 29960202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 381238 + ... + 381290.

Almost surely, 2^20206992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20206992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29408832).

20206992 is an abundant number, since it is smaller than the sum of its proper divisors (38610672).

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

20206992 is a wasteful number, since it uses less digits than its factorization.

20206992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20206992 is about 4495.2187933403. The cubic root of 20206992 is about 272.3749874071.

The spelling of 20206992 in words is "twenty million, two hundred six thousand, nine hundred ninety-two".