220720190 has 32 divisors (see below), whose sum is σ = 416157696. Its totient is φ = 84126240.

The previous prime is 220720153. The next prime is 220720211. The reversal of 220720190 is 91027022.

It is a super-2 number, since 2×220720190² = 97434804547272200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 63395 + ... + 66785.

It is an arithmetic number, because the mean of its divisors is an integer number (13004928).

Almost surely, 2^220720190 is an apocalyptic number.

220720190 is a deficient number, since it is larger than the sum of its proper divisors (195437506).

220720190 is a wasteful number, since it uses less digits than its factorization.

220720190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 220720190 is about 14856.6547378607. The cubic root of 220720190 is about 604.3390911329.

The spelling of 220720190 in words is "two hundred twenty million, seven hundred twenty thousand, one hundred ninety".