20382190 has 32 divisors (see below), whose sum is σ = 38916864. Its totient is φ = 7672320.

The previous prime is 20382169. The next prime is 20382191. The reversal of 20382190 is 9128302.

It is a super-2 number, since 2×20382190² = 830867338392200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20382191) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10582 + ... + 12358.

It is an arithmetic number, because the mean of its divisors is an integer number (1216152).

Almost surely, 2^20382190 is an apocalyptic number.

20382190 is a deficient number, since it is larger than the sum of its proper divisors (18534674).

20382190 is a wasteful number, since it uses less digits than its factorization.

20382190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20382190 is about 4514.6638856065. The cubic root of 20382190 is about 273.1599022087.

The spelling of 20382190 in words is "twenty million, three hundred eighty-two thousand, one hundred ninety".