1229415328 has 36 divisors (see below), whose sum is σ = 2506051170. Its totient is φ = 592995200.

The previous prime is 1229415307. The next prime is 1229415337. The reversal of 1229415328 is 8235149221.

It can be written as a sum of positive squares in only one way, i.e., 1038643984 + 190771344 = 32228^2 + 13812^2 .

It is a super-2 number, since 2×1229415328² = 3022924097442695168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1067553 + ... + 1068703.

Almost surely, 2^1229415328 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 1229415328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1253025585).

1229415328 is an abundant number, since it is smaller than the sum of its proper divisors (1276635842).

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

1229415328 is an frugal number, since it uses more digits than its factorization.

1229415328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341 (or 1182 counting only the distinct ones).

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

The square root of 1229415328 is about 35063.0193793974. The cubic root of 1229415328 is about 1071.2714753833.

The spelling of 1229415328 in words is "one billion, two hundred twenty-nine million, four hundred fifteen thousand, three hundred twenty-eight".