Search a number
-
+
80368457 = 133157233
BaseRepresentation
bin1001100101001…
…01001101001001
312121020010210112
410302211031021
5131033242312
611550324105
71664056241
oct462451511
9177203715
1080368457
1141403014
1222ab9635
131385c000
14a960b21
1570c7d22
hex4ca5349

80368457 has 16 divisors (see below), whose sum is σ = 87993360. Its totient is φ = 73397376.

The previous prime is 80368451. The next prime is 80368459. The reversal of 80368457 is 75486308.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 72097081 + 8271376 = 8491^2 + 2876^2 .

It is not a de Polignac number, because 80368457 - 216 = 80302921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80368451) 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, 344813 + ... + 345045.

It is an arithmetic number, because the mean of its divisors is an integer number (5499585).

Almost surely, 280368457 is an apocalyptic number.

It is an amenable number.

80368457 is a deficient number, since it is larger than the sum of its proper divisors (7624903).

80368457 is a wasteful number, since it uses less digits than its factorization.

80368457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 80368457 is about 8964.8456205336. The cubic root of 80368457 is about 431.5474388017.

The spelling of 80368457 in words is "eighty million, three hundred sixty-eight thousand, four hundred fifty-seven".

Divisors: 1 13 157 169 233 2041 2197 3029 26533 36581 39377 344929 475553 511901 6182189 80368457