20234872 has 16 divisors (see below), whose sum is σ = 43360560. Its totient is φ = 8672064.

The previous prime is 20234849. The next prime is 20234881. The reversal of 20234872 is 27843202.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20234872.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 180613 + ... + 180724.

It is an arithmetic number, because the mean of its divisors is an integer number (2710035).

Almost surely, 2^20234872 is an apocalyptic number.

It is an amenable number.

20234872 is an abundant number, since it is smaller than the sum of its proper divisors (23125688).

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

20234872 is a wasteful number, since it uses less digits than its factorization.

20234872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361350 (or 361346 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20234872 is about 4498.3187970619. The cubic root of 20234872 is about 272.5001969530.

The spelling of 20234872 in words is "twenty million, two hundred thirty-four thousand, eight hundred seventy-two".