20167992 has 96 divisors (see below), whose sum is σ = 60933600. Its totient is φ = 5983488.

The previous prime is 20167991. The next prime is 20167993. The reversal of 20167992 is 29976102.

It is an interprime number because it is at equal distance from previous prime (20167991) and next prime (20167993).

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 (20167991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26773 + ... + 27515.

It is an arithmetic number, because the mean of its divisors is an integer number (634725).

Almost surely, 2^20167992 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 20167992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30466800).

20167992 is an abundant number, since it is smaller than the sum of its proper divisors (40765608).

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

20167992 is a wasteful number, since it uses less digits than its factorization.

20167992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 20167992 is about 4490.8787558784. The cubic root of 20167992 is about 272.1996443736.

The spelling of 20167992 in words is "twenty million, one hundred sixty-seven thousand, nine hundred ninety-two".