219572090 has 8 divisors (see below), whose sum is σ = 395229780. Its totient is φ = 87828832.

The previous prime is 219572077. The next prime is 219572117. The reversal of 219572090 is 90275912.

It can be written as a sum of positive squares in 2 ways, for example, as 205606921 + 13965169 = 14339^2 + 3737^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 219572090.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10978595 + ... + 10978614.

Almost surely, 2^219572090 is an apocalyptic number.

219572090 is a deficient number, since it is larger than the sum of its proper divisors (175657690).

219572090 is a wasteful number, since it uses less digits than its factorization.

219572090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21957216.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 219572090 is about 14817.9651099603. The cubic root of 219572090 is about 603.2894239349.

The spelling of 219572090 in words is "two hundred nineteen million, five hundred seventy-two thousand, ninety".