20293992 has 48 divisors (see below), whose sum is σ = 55170180. Its totient is φ = 6739200.

The previous prime is 20293963. The next prime is 20294003. The reversal of 20293992 is 29939202.

It can be written as a sum of positive squares in 2 ways, for example, as 19766916 + 527076 = 4446^2 + 726^2 .

It is a super-2 number, since 2×20293992² = 823692222592128, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37242 + ... + 37782.

Almost surely, 2^20293992 is an apocalyptic number.

It is an amenable number.

20293992 is an abundant number, since it is smaller than the sum of its proper divisors (34876188).

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

20293992 is a wasteful number, since it uses less digits than its factorization.

20293992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 20293992 is about 4504.8853481526. The cubic root of 20293992 is about 272.7653258418.

The spelling of 20293992 in words is "twenty million, two hundred ninety-three thousand, nine hundred ninety-two".