163554420 has 48 divisors (see below), whose sum is σ = 465470208. Its totient is φ = 42898560.

The previous prime is 163554401. The next prime is 163554427. The reversal of 163554420 is 24455361.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163554427) 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, 18684 + ... + 26003.

It is an arithmetic number, because the mean of its divisors is an integer number (9697296).

Almost surely, 2^163554420 is an apocalyptic number.

163554420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163554420 is an abundant number, since it is smaller than the sum of its proper divisors (301915788).

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

163554420 is a wasteful number, since it uses less digits than its factorization.

163554420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44760 (or 44758 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 163554420 is about 12788.8396658962. The cubic root of 163554420 is about 546.8741916505.

The spelling of 163554420 in words is "one hundred sixty-three million, five hundred fifty-four thousand, four hundred twenty".