20375830 has 16 divisors (see below), whose sum is σ = 37278864. Its totient is φ = 8016480.

The previous prime is 20375819. The next prime is 20375857. The reversal of 20375830 is 3857302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16092 + ... + 17311.

It is an arithmetic number, because the mean of its divisors is an integer number (2329929).

Almost surely, 2^20375830 is an apocalyptic number.

20375830 is a deficient number, since it is larger than the sum of its proper divisors (16903034).

20375830 is a wasteful number, since it uses less digits than its factorization.

20375830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33471.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20375830 is about 4513.9594592774. The cubic root of 20375830 is about 273.1314872426.

The spelling of 20375830 in words is "twenty million, three hundred seventy-five thousand, eight hundred thirty".