219157344 has 72 divisors (see below), whose sum is σ = 712267920. Its totient is φ = 62615808.

The previous prime is 219157339. The next prime is 219157357. The reversal of 219157344 is 443751912.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 219157299 and 219157308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52339 + ... + 56370.

It is an arithmetic number, because the mean of its divisors is an integer number (9892610).

Almost surely, 2^219157344 is an apocalyptic number.

219157344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

219157344 is an abundant number, since it is smaller than the sum of its proper divisors (493110576).

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

219157344 is a wasteful number, since it uses less digits than its factorization.

219157344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108732 (or 108721 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 219157344 is about 14803.9637935250. The cubic root of 219157344 is about 602.9093367978.

The spelling of 219157344 in words is "two hundred nineteen million, one hundred fifty-seven thousand, three hundred forty-four".