220928215 has 8 divisors (see below), whose sum is σ = 268848288. Its totient is φ = 174252960.

The previous prime is 220928203. The next prime is 220928261. The reversal of 220928215 is 512829022.

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

It is not a de Polignac number, because 220928215 - 2¹³ = 220920023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310812 + ... + 311521.

It is an arithmetic number, because the mean of its divisors is an integer number (33606036).

Almost surely, 2^220928215 is an apocalyptic number.

220928215 is a deficient number, since it is larger than the sum of its proper divisors (47920073).

220928215 is an equidigital number, since it uses as much as digits as its factorization.

220928215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622409.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 220928215 is about 14863.6541604008. The cubic root of 220928215 is about 604.5288912663.

The spelling of 220928215 in words is "two hundred twenty million, nine hundred twenty-eight thousand, two hundred fifteen".