Search a number
-
+
164872408 = 23131157321
BaseRepresentation
bin10011101001111…
…00000011011000
3102111020101102111
421310330003120
5314201404113
624205442104
74041251401
oct1164740330
9374211374
10164872408
1185080098
1247270334
132820844c
1417c7a9a8
15e71b13d
hex9d3c0d8

164872408 has 16 divisors (see below), whose sum is σ = 311497560. Its totient is φ = 81806400.

The previous prime is 164872391. The next prime is 164872427. The reversal of 164872408 is 804278461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77613 + ... + 79708.

Almost surely, 2164872408 is an apocalyptic number.

It is an amenable number.

164872408 is a deficient number, since it is larger than the sum of its proper divisors (146625152).

164872408 is a wasteful number, since it uses less digits than its factorization.

164872408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157458 (or 157454 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 164872408 is about 12840.2651062975. The cubic root of 164872408 is about 548.3392415258.

The spelling of 164872408 in words is "one hundred sixty-four million, eight hundred seventy-two thousand, four hundred eight".

Divisors: 1 2 4 8 131 262 524 1048 157321 314642 629284 1258568 20609051 41218102 82436204 164872408