20124516 has 36 divisors (see below), whose sum is σ = 48127632. Its totient is φ = 6544944.

The previous prime is 20124491. The next prime is 20124523. The reversal of 20124516 is 61542102.

It is a super-2 number, since 2×20124516² = 809992288468512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20124492 and 20124501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21735 + ... + 22641.

Almost surely, 2^20124516 is an apocalyptic number.

It is an amenable number.

20124516 is an abundant number, since it is smaller than the sum of its proper divisors (28003116).

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

20124516 is a wasteful number, since it uses less digits than its factorization.

20124516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20124516 is about 4486.0356663763. The cubic root of 20124516 is about 272.0039106993.

Adding to 20124516 its reverse (61542102), we get a palindrome (81666618).

The spelling of 20124516 in words is "twenty million, one hundred twenty-four thousand, five hundred sixteen".