1628453322 has 44 divisors (see below), whose sum is σ = 3664265010. Its totient is φ = 542778408.

The previous prime is 1628453297. The next prime is 1628453329. The reversal of 1628453322 is 2233548261.

1628453322 is a `hidden beast` number, since 1 + 6 + 284 + 53 + 322 = 666.

It can be written as a sum of positive squares in only one way, i.e., 952401321 + 676052001 = 30861^2 + 26001^2 .

It is not an unprimeable number, because it can be changed into a prime (1628453329) by changing a digit.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 111204 + ... + 124992.

Almost surely, 2^1628453322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1628453322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1832132505).

1628453322 is an abundant number, since it is smaller than the sum of its proper divisors (2035811688).

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

1628453322 is an frugal number, since it uses more digits than its factorization.

1628453322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13821 (or 13794 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 1628453322 is about 40354.0991969837. The cubic root of 1628453322 is about 1176.4995664914.

The spelling of 1628453322 in words is "one billion, six hundred twenty-eight million, four hundred fifty-three thousand, three hundred twenty-two".