Search a number
-
+
80913159 = 321372479
BaseRepresentation
bin1001101001010…
…10001100000111
312122020210222200
410310222030013
5131203210114
612010125543
72001515265
oct464521407
9178223880
1080913159
1141745288
12231208b3
13139bcc12
14aa63435
157184409
hex4d2a307

80913159 has 18 divisors (see below), whose sum is σ = 117979680. Its totient is φ = 53436576.

The previous prime is 80913137. The next prime is 80913163. The reversal of 80913159 is 95131908.

It is a happy number.

It is not a de Polignac number, because 80913159 - 27 = 80913031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80913169) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 168682 + ... + 169160.

Almost surely, 280913159 is an apocalyptic number.

80913159 is a deficient number, since it is larger than the sum of its proper divisors (37066521).

80913159 is a wasteful number, since it uses less digits than its factorization.

80913159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 80913159 is about 8995.1742062063. The cubic root of 80913159 is about 432.5201906219.

The spelling of 80913159 in words is "eighty million, nine hundred thirteen thousand, one hundred fifty-nine".

Divisors: 1 3 9 137 411 479 1233 1437 4311 18769 56307 65623 168921 196869 590607 8990351 26971053 80913159