219742572 has 24 divisors (see below), whose sum is σ = 585980416. Its totient is φ = 62783568.

The previous prime is 219742559. The next prime is 219742573. The reversal of 219742572 is 275247912.

It is a self number, because there is not a number n which added to its sum of digits gives 219742572.

It is not an unprimeable number, because it can be changed into a prime (219742573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307908 + ... + 1308075.

Almost surely, 2^219742572 is an apocalyptic number.

It is an amenable number.

219742572 is an abundant number, since it is smaller than the sum of its proper divisors (366237844).

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

219742572 is a wasteful number, since it uses less digits than its factorization.

219742572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615997 (or 2615995 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 219742572 is about 14823.7165380346. The cubic root of 219742572 is about 603.4455205507.

The spelling of 219742572 in words is "two hundred nineteen million, seven hundred forty-two thousand, five hundred seventy-two".