163032820 has 24 divisors (see below), whose sum is σ = 344673000. Its totient is φ = 64774272.

The previous prime is 163032817. The next prime is 163032869. The reversal of 163032820 is 28230361.

It can be written as a sum of positive squares in 4 ways, for example, as 266256 + 162766564 = 516^2 + 12758^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24375 + ... + 30334.

It is an arithmetic number, because the mean of its divisors is an integer number (14361375).

Almost surely, 2^163032820 is an apocalyptic number.

163032820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163032820 is an abundant number, since it is smaller than the sum of its proper divisors (181640180).

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

163032820 is a wasteful number, since it uses less digits than its factorization.

163032820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54867 (or 54865 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 163032820 is about 12768.4306005084. The cubic root of 163032820 is about 546.2922174640.

The spelling of 163032820 in words is "one hundred sixty-three million, thirty-two thousand, eight hundred twenty".