219990652 has 18 divisors (see below), whose sum is σ = 440138328. Its totient is φ = 94248072.

The previous prime is 219990643. The next prime is 219990677. The reversal of 219990652 is 256099912.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 219990599 and 219990608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77083 + ... + 79885.

Almost surely, 2^219990652 is an apocalyptic number.

It is an amenable number.

219990652 is an abundant number, since it is smaller than the sum of its proper divisors (220147676).

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

219990652 is an frugal number, since it uses more digits than its factorization.

219990652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 219990652 is about 14832.0818498281. The cubic root of 219990652 is about 603.6725232395.

The spelling of 219990652 in words is "two hundred nineteen million, nine hundred ninety thousand, six hundred fifty-two".