20432830 has 16 divisors (see below), whose sum is σ = 40122864. Its totient is φ = 7430080.

The previous prime is 20432803. The next prime is 20432851. The reversal of 20432830 is 3823402.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92767 + ... + 92986.

It is an arithmetic number, because the mean of its divisors is an integer number (2507679).

Almost surely, 2^20432830 is an apocalyptic number.

20432830 is a deficient number, since it is larger than the sum of its proper divisors (19690034).

20432830 is a wasteful number, since it uses less digits than its factorization.

20432830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185771.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20432830 is about 4520.2687973173. The cubic root of 20432830 is about 273.3859390453.

The spelling of 20432830 in words is "twenty million, four hundred thirty-two thousand, eight hundred thirty".