20103792 has 80 divisors (see below), whose sum is σ = 55924992. Its totient is φ = 6200320.

The previous prime is 20103781. The next prime is 20103793. The reversal of 20103792 is 29730102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57763 + ... + 58109.

Almost surely, 2^20103792 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 20103792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27962496).

20103792 is an abundant number, since it is smaller than the sum of its proper divisors (35821200).

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

20103792 is a wasteful number, since it uses less digits than its factorization.

20103792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20103792 is about 4483.7252368984. The cubic root of 20103792 is about 271.9105097759.

Adding to 20103792 its reverse (29730102), we get a palindrome (49833894).

The spelling of 20103792 in words is "twenty million, one hundred three thousand, seven hundred ninety-two".