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163472089 = 113122819
BaseRepresentation
bin10011011111001…
…10001011011001
3102101121020112211
421233212023121
5313322101324
624115435121
74023330004
oct1157461331
9371536484
10163472089
1184304000
12468b5aa1
1327b37c61
14179d453b
15e541294
hex9be62d9

163472089 has 8 divisors (see below), whose sum is σ = 179808480. Its totient is φ = 148609780.

The previous prime is 163472081. The next prime is 163472123. The reversal of 163472089 is 980274361.

It is not a de Polignac number, because 163472089 - 23 = 163472081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163472081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60079 + ... + 62740.

It is an arithmetic number, because the mean of its divisors is an integer number (22476060).

Almost surely, 2163472089 is an apocalyptic number.

It is an amenable number.

163472089 is a deficient number, since it is larger than the sum of its proper divisors (16336391).

163472089 is an equidigital number, since it uses as much as digits as its factorization.

163472089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122852 (or 122830 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 163472089 is about 12785.6203994957. The cubic root of 163472089 is about 546.7824133174.

The spelling of 163472089 in words is "one hundred sixty-three million, four hundred seventy-two thousand, eighty-nine".

Divisors: 1 11 121 1331 122819 1351009 14861099 163472089