20428092 has 24 divisors (see below), whose sum is σ = 52962000. Its totient is φ = 6809328.

The previous prime is 20428069. The next prime is 20428141. The reversal of 20428092 is 29082402.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94467 + ... + 94682.

It is an arithmetic number, because the mean of its divisors is an integer number (2206750).

Almost surely, 2^20428092 is an apocalyptic number.

It is an amenable number.

20428092 is an abundant number, since it is smaller than the sum of its proper divisors (32533908).

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

20428092 is a wasteful number, since it uses less digits than its factorization.

20428092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189162 (or 189154 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20428092 is about 4519.7446830546. The cubic root of 20428092 is about 273.3648063435.

The spelling of 20428092 in words is "twenty million, four hundred twenty-eight thousand, ninety-two".