1219428352 has 68 divisors (see below), whose sum is σ = 2548020240. Its totient is φ = 582483968.

The previous prime is 1219428319. The next prime is 1219428383. The reversal of 1219428352 is 2538249121.

It is a super-2 number, since 2×1219428352² = 2974011011322871808, which contains 22 as substring.

Its product of digits (34560) is a multiple of the sum of its prime factors (864).

It is a congruent number.

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, 1506924 + ... + 1507732.

Almost surely, 2^1219428352 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 1219428352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274010120).

1219428352 is an abundant number, since it is smaller than the sum of its proper divisors (1328591888).

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

1219428352 is an frugal number, since it uses more digits than its factorization.

1219428352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 834 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 1219428352 is about 34920.3143170276. The cubic root of 1219428352 is about 1068.3628125775.

The spelling of 1219428352 in words is "one billion, two hundred nineteen million, four hundred twenty-eight thousand, three hundred fifty-two".