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161164060 = 225131137449
BaseRepresentation
bin10011001101100…
…10101100011100
3102020020222112021
421212302230130
5312224222220
623554145524
73664605031
oct1146625434
9366228467
10161164060
1182a77a42
1245b822a4
132750a565
1417593388
15e2374aa
hex99b2b1c

161164060 has 48 divisors (see below), whose sum is σ = 344282400. Its totient is φ = 63365120.

The previous prime is 161164039. The next prime is 161164067. The reversal of 161164060 is 60461161.

161164060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161164067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358716 + ... + 359164.

It is an arithmetic number, because the mean of its divisors is an integer number (7172550).

Almost surely, 2161164060 is an apocalyptic number.

161164060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161164060 is an abundant number, since it is smaller than the sum of its proper divisors (183118340).

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

161164060 is a wasteful number, since it uses less digits than its factorization.

161164060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 161164060 is about 12695.0407640149. The cubic root of 161164060 is about 544.1969037427.

The spelling of 161164060 in words is "one hundred sixty-one million, one hundred sixty-four thousand, sixty".

Divisors: 1 2 4 5 10 20 131 137 262 274 449 524 548 655 685 898 1310 1370 1796 2245 2620 2740 4490 8980 17947 35894 58819 61513 71788 89735 117638 123026 179470 235276 246052 294095 307565 358940 588190 615130 1176380 1230260 8058203 16116406 32232812 40291015 80582030 161164060