163397628 has 48 divisors (see below), whose sum is σ = 433967520. Its totient is φ = 53136000.

The previous prime is 163397627. The next prime is 163397639. The reversal of 163397628 is 826793361.

163397628 is a `hidden beast` number, since 1 + 633 + 9 + 7 + 6 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163397627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14023 + ... + 22878.

It is an arithmetic number, because the mean of its divisors is an integer number (9040990).

Almost surely, 2^163397628 is an apocalyptic number.

163397628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

163397628 is an abundant number, since it is smaller than the sum of its proper divisors (270569892).

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

163397628 is a wasteful number, since it uses less digits than its factorization.

163397628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36955 (or 36947 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 163397628 is about 12782.7081637656. The cubic root of 163397628 is about 546.6993815110.

It can be divided in two parts, 163397 and 628, that added together give a square (164025 = 405²).

The spelling of 163397628 in words is "one hundred sixty-three million, three hundred ninety-seven thousand, six hundred twenty-eight".