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160390404 = 223231143719
BaseRepresentation
bin10011000111101…
…01110100000100
3102011210200021100
421203311310010
5312024443104
623525420100
73655203336
oct1143656404
9364720240
10160390404
1182599759
124586a630
13272c9385
1417431456
15e133139
hex98f5d04

160390404 has 36 divisors (see below), whose sum is σ = 418512640. Its totient is φ = 51738480.

The previous prime is 160390403. The next prime is 160390409. The reversal of 160390404 is 404093061.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (160390403) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 70744 + ... + 72975.

Almost surely, 2160390404 is an apocalyptic number.

It is an amenable number.

160390404 is an abundant number, since it is smaller than the sum of its proper divisors (258122236).

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

160390404 is a wasteful number, since it uses less digits than its factorization.

160390404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143760 (or 143755 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 160390404 is about 12664.5333115753. The cubic root of 160390404 is about 543.3247144638.

The spelling of 160390404 in words is "one hundred sixty million, three hundred ninety thousand, four hundred four".

Divisors: 1 2 3 4 6 9 12 18 31 36 62 93 124 186 279 372 558 1116 143719 287438 431157 574876 862314 1293471 1724628 2586942 4455289 5173884 8910578 13365867 17821156 26731734 40097601 53463468 80195202 160390404