20833992 has 24 divisors (see below), whose sum is σ = 56425590. Its totient is φ = 6944640.

The previous prime is 20833991. The next prime is 20833999. The reversal of 20833992 is 29933802.

It can be written as a sum of positive squares in only one way, i.e., 12574116 + 8259876 = 3546^2 + 2874^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20833991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144609 + ... + 144752.

Almost surely, 2^20833992 is an apocalyptic number.

It is an amenable number.

20833992 is an abundant number, since it is smaller than the sum of its proper divisors (35591598).

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

20833992 is a wasteful number, since it uses less digits than its factorization.

20833992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289373 (or 289366 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 20833992 is about 4564.4267986243. The cubic root of 20833992 is about 275.1635038699.

The spelling of 20833992 in words is "twenty million, eight hundred thirty-three thousand, nine hundred ninety-two".