20112430 has 32 divisors (see below), whose sum is σ = 39318048. Its totient is φ = 7363200.

The previous prime is 20112413. The next prime is 20112439. The reversal of 20112430 is 3421102.

20112430 = 325² + 326² + ... + 455².

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 20112430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112439) 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, 16440 + ... + 17620.

It is an arithmetic number, because the mean of its divisors is an integer number (1228689).

Almost surely, 2^20112430 is an apocalyptic number.

20112430 is a deficient number, since it is larger than the sum of its proper divisors (19205618).

20112430 is a wasteful number, since it uses less digits than its factorization.

20112430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20112430 is about 4484.6883949724. The cubic root of 20112430 is about 271.9494481458.

Adding to 20112430 its reverse (3421102), we get a palindrome (23533532).

The spelling of 20112430 in words is "twenty million, one hundred twelve thousand, four hundred thirty".