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161928088 = 2372891573
BaseRepresentation
bin10011010011011…
…01001110011000
3102021200210120121
421221231032120
5312423144323
624022403024
74004236360
oct1151551630
9367623517
10161928088
1183449a73
1246290474
132771724a
14177119a0
15e338a5d
hex9a6d398

161928088 has 16 divisors (see below), whose sum is σ = 346988880. Its totient is φ = 69397728.

The previous prime is 161928061. The next prime is 161928101. The reversal of 161928088 is 880829161.

161928088 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445731 + ... + 1445842.

It is an arithmetic number, because the mean of its divisors is an integer number (21686805).

Almost surely, 2161928088 is an apocalyptic number.

It is an amenable number.

161928088 is an abundant number, since it is smaller than the sum of its proper divisors (185060792).

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

161928088 is a wasteful number, since it uses less digits than its factorization.

161928088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891586 (or 2891582 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 161928088 is about 12725.0967776281. The cubic root of 161928088 is about 545.0555037039.

The spelling of 161928088 in words is "one hundred sixty-one million, nine hundred twenty-eight thousand, eighty-eight".

Divisors: 1 2 4 7 8 14 28 56 2891573 5783146 11566292 20241011 23132584 40482022 80964044 161928088