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161396124 = 22313449677
BaseRepresentation
bin10011001111010…
…11010110011100
3102020200202212020
421213223112130
5312304133444
624003140140
73666562431
oct1147532634
9366622766
10161396124
118311632a
1246074650
132758c086
1417613b88
15e281119
hex99eb59c

161396124 has 12 divisors (see below), whose sum is σ = 376590984. Its totient is φ = 53798704.

The previous prime is 161396063. The next prime is 161396141. The reversal of 161396124 is 421693161.

It is a tau number, because it is divible by the number of its divisors (12).

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, 6724827 + ... + 6724850.

It is an arithmetic number, because the mean of its divisors is an integer number (31382582).

Almost surely, 2161396124 is an apocalyptic number.

It is an amenable number.

161396124 is an abundant number, since it is smaller than the sum of its proper divisors (215194860).

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

161396124 is a wasteful number, since it uses less digits than its factorization.

161396124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13449684 (or 13449682 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 161396124 is about 12704.1774231943. The cubic root of 161396124 is about 544.4579792029.

The spelling of 161396124 in words is "one hundred sixty-one million, three hundred ninety-six thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 12 13449677 26899354 40349031 53798708 80698062 161396124