215622798 has 16 divisors (see below), whose sum is σ = 456613200. Its totient is φ = 67646336.

The previous prime is 215622787. The next prime is 215622829. The reversal of 215622798 is 897226512.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1056873 + ... + 1057076.

It is an arithmetic number, because the mean of its divisors is an integer number (28538325).

Almost surely, 2^215622798 is an apocalyptic number.

215622798 is an abundant number, since it is smaller than the sum of its proper divisors (240990402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215622798 is a wasteful number, since it uses less digits than its factorization.

215622798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113971.

The product of its digits is 120960, while the sum is 42.

The square root of 215622798 is about 14684.1001767218. The cubic root of 215622798 is about 599.6505353859.

The spelling of 215622798 in words is "two hundred fifteen million, six hundred twenty-two thousand, seven hundred ninety-eight".