20207124 has 48 divisors (see below), whose sum is σ = 59875200. Its totient is φ = 5773248.

The previous prime is 20207123. The next prime is 20207129. The reversal of 20207124 is 42170202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20207097 and 20207106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20207123) 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, 12609 + ... + 14120.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^20207124 is an apocalyptic number.

It is an amenable number.

20207124 is an abundant number, since it is smaller than the sum of its proper divisors (39668076).

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

20207124 is a wasteful number, since it uses less digits than its factorization.

20207124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26749 (or 26741 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 20207124 is about 4495.2334755828. The cubic root of 20207124 is about 272.3755804926.

Adding to 20207124 its reverse (42170202), we get a palindrome (62377326).

The spelling of 20207124 in words is "twenty million, two hundred seven thousand, one hundred twenty-four".