20124458 has 16 divisors (see below), whose sum is σ = 31929120. Its totient is φ = 9486576.

The previous prime is 20124457. The next prime is 20124479. The reversal of 20124458 is 85442102.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20124457) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7460 + ... + 9792.

It is an arithmetic number, because the mean of its divisors is an integer number (1995570).

Almost surely, 2^20124458 is an apocalyptic number.

20124458 is a deficient number, since it is larger than the sum of its proper divisors (11804662).

20124458 is a wasteful number, since it uses less digits than its factorization.

20124458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 20124458 is about 4486.0292018666. The cubic root of 20124458 is about 272.0036493888.

The spelling of 20124458 in words is "twenty million, one hundred twenty-four thousand, four hundred fifty-eight".