220378751 has 8 divisors (see below), whose sum is σ = 223747584. Its totient is φ = 217019520.

The previous prime is 220378733. The next prime is 220378757. The reversal of 220378751 is 157873022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220378751 - 2¹⁸ = 220116607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220378757) by changing a digit.

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, 53570 + ... + 57536.

It is an arithmetic number, because the mean of its divisors is an integer number (27968448).

Almost surely, 2^220378751 is an apocalyptic number.

220378751 is a deficient number, since it is larger than the sum of its proper divisors (3368833).

220378751 is an equidigital number, since it uses as much as digits as its factorization.

220378751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4801.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 220378751 is about 14845.1591773211. The cubic root of 220378751 is about 604.0273065955.

The spelling of 220378751 in words is "two hundred twenty million, three hundred seventy-eight thousand, seven hundred fifty-one".