20123792 has 20 divisors (see below), whose sum is σ = 41989500. Its totient is φ = 9287808.

The previous prime is 20123783. The next prime is 20123809. The reversal of 20123792 is 29732102.

It can be written as a sum of positive squares in 2 ways, for example, as 10784656 + 9339136 = 3284^2 + 3056^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48167 + ... + 48582.

It is an arithmetic number, because the mean of its divisors is an integer number (2099475).

Almost surely, 2^20123792 is an apocalyptic number.

It is an amenable number.

20123792 is an abundant number, since it is smaller than the sum of its proper divisors (21865708).

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

20123792 is a wasteful number, since it uses less digits than its factorization.

20123792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96770 (or 96764 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20123792 is about 4485.9549707950. The cubic root of 20123792 is about 272.0006487874. Note that the first 3 decimals are identical.

Adding to 20123792 its reverse (29732102), we get a palindrome (49855894).

The spelling of 20123792 in words is "twenty million, one hundred twenty-three thousand, seven hundred ninety-two".