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161450680 = 2359741611
BaseRepresentation
bin10011001111110…
…00101010111000
3102020210112200211
421213320222320
5312312410210
624004240504
74000210456
oct1147705270
9366715624
10161450680
1183153316
12460a0134
13275aab61
14176299d6
15e29238a
hex99f8ab8

161450680 has 32 divisors (see below), whose sum is σ = 367017840. Its totient is φ = 63912960.

The previous prime is 161450677. The next prime is 161450699. The reversal of 161450680 is 86054161.

161450680 is digitally balanced in base 3, because in such base 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 7 ways as a sum of consecutive naturals, for example, 16926 + ... + 24685.

Almost surely, 2161450680 is an apocalyptic number.

161450680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161450680 is an abundant number, since it is smaller than the sum of its proper divisors (205567160).

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

161450680 is a wasteful number, since it uses less digits than its factorization.

161450680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41719 (or 41715 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 161450680 is about 12706.3244095214. The cubic root of 161450680 is about 544.5193191793.

The spelling of 161450680 in words is "one hundred sixty-one million, four hundred fifty thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 97 194 388 485 776 970 1940 3880 41611 83222 166444 208055 332888 416110 832220 1664440 4036267 8072534 16145068 20181335 32290136 40362670 80725340 161450680