219897432 has 96 divisors (see below), whose sum is σ = 615167280. Its totient is φ = 70917120.

The previous prime is 219897413. The next prime is 219897451. The reversal of 219897432 is 234798912.

It is an interprime number because it is at equal distance from previous prime (219897413) and next prime (219897451).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 480948 + ... + 481404.

Almost surely, 2^219897432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219897432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307583640).

219897432 is an abundant number, since it is smaller than the sum of its proper divisors (395269848).

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

219897432 is a wasteful number, since it uses less digits than its factorization.

219897432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 666 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 219897432 is about 14828.9390045276. The cubic root of 219897432 is about 603.5872433989.

The spelling of 219897432 in words is "two hundred nineteen million, eight hundred ninety-seven thousand, four hundred thirty-two".