163428550 has 12 divisors (see below), whose sum is σ = 303977196. Its totient is φ = 65371400.

The previous prime is 163428511. The next prime is 163428563. The reversal of 163428550 is 55824361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1634236 + ... + 1634335.

It is an arithmetic number, because the mean of its divisors is an integer number (25331433).

Almost surely, 2^163428550 is an apocalyptic number.

163428550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163428550 is a deficient number, since it is larger than the sum of its proper divisors (140548646).

163428550 is a wasteful number, since it uses less digits than its factorization.

163428550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268583 (or 3268578 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 163428550 is about 12783.9176311489. The cubic root of 163428550 is about 546.7338658386.

The spelling of 163428550 in words is "one hundred sixty-three million, four hundred twenty-eight thousand, five hundred fifty".