20924892 has 120 divisors (see below), whose sum is σ = 60374160. Its totient is φ = 6289920.

The previous prime is 20924887. The next prime is 20924899. The reversal of 20924892 is 29842902.

It is a super-2 number, since 2×20924892² = 875702210423328, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20924899) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 159667 + ... + 159797.

It is an arithmetic number, because the mean of its divisors is an integer number (503118).

Almost surely, 2^20924892 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 20924892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30187080).

20924892 is an abundant number, since it is smaller than the sum of its proper divisors (39449268).

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

20924892 is a wasteful number, since it uses less digits than its factorization.

20924892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 20924892 is about 4574.3733997128. The cubic root of 20924892 is about 275.5631084134.

The spelling of 20924892 in words is "twenty million, nine hundred twenty-four thousand, eight hundred ninety-two".