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161434679 = 759390883
BaseRepresentation
bin10011001111101…
…00110000110111
3102020202201202012
421213310300313
5312311402204
624004034435
74000113020
oct1147646067
9366681665
10161434679
118314229a
1246092a1b
13275a37a3
1417623c47
15e28c76e
hex99f4c37

161434679 has 8 divisors (see below), whose sum is σ = 187624320. Its totient is φ = 136026936.

The previous prime is 161434667. The next prime is 161434699. The reversal of 161434679 is 976434161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161434679 - 220 = 160386103 is a prime.

It is a super-2 number, since 2×1614346792 = 52122311167666082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161434649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195029 + ... + 195854.

It is an arithmetic number, because the mean of its divisors is an integer number (23453040).

Almost surely, 2161434679 is an apocalyptic number.

161434679 is a deficient number, since it is larger than the sum of its proper divisors (26189641).

161434679 is an equidigital number, since it uses as much as digits as its factorization.

161434679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390949.

The product of its digits is 108864, while the sum is 41.

The square root of 161434679 is about 12705.6947468448. The cubic root of 161434679 is about 544.5013299055.

The spelling of 161434679 in words is "one hundred sixty-one million, four hundred thirty-four thousand, six hundred seventy-nine".