20124480 has 56 divisors (see below), whose sum is σ = 63898272. Its totient is φ = 5366272.

The previous prime is 20124479. The next prime is 20124491. The reversal of 20124480 is 8442102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9522 + ... + 11441.

Almost surely, 2^20124480 is an apocalyptic number.

20124480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20124480 is an abundant number, since it is smaller than the sum of its proper divisors (43773792).

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

20124480 is a wasteful number, since it uses less digits than its factorization.

20124480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20983 (or 20973 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 20124480 is about 4486.0316539231. The cubic root of 20124480 is about 272.0037485066.

Adding to 20124480 its reverse (8442102), we get a palindrome (28566582).

The spelling of 20124480 in words is "twenty million, one hundred twenty-four thousand, four hundred eighty".