1322728332 has 48 divisors (see below), whose sum is σ = 3225395712. Its totient is φ = 421485120.

The previous prime is 1322728327. The next prime is 1322728373. The reversal of 1322728332 is 2338272231.

It is a super-2 number, since 2×1322728332² = 3499220480551004448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1322728293 and 1322728302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3019 + ... + 51522.

It is an arithmetic number, because the mean of its divisors is an integer number (67195744).

Almost surely, 2^1322728332 is an apocalyptic number.

1322728332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1322728332 is an abundant number, since it is smaller than the sum of its proper divisors (1902667380).

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

1322728332 is a wasteful number, since it uses less digits than its factorization.

1322728332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54638 (or 54636 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 1322728332 is about 36369.3323007173. The cubic root of 1322728332 is about 1097.7165668001.

The spelling of 1322728332 in words is "one billion, three hundred twenty-two million, seven hundred twenty-eight thousand, three hundred thirty-two".