Search a number
-
+
80510397 = 3115941351
BaseRepresentation
bin1001100110001…
…11110110111101
312121111100111120
410303013312331
5131102313042
611553341153
71665220122
oct463076675
9177440446
1080510397
114149a720
1222b677b9
13138ab7b6
14a99a749
157104dec
hex4cc7dbd

80510397 has 16 divisors (see below), whose sum is σ = 119093760. Its totient is φ = 47966000.

The previous prime is 80510383. The next prime is 80510399. The reversal of 80510397 is 79301508.

It is a cyclic number.

It is not a de Polignac number, because 80510397 - 28 = 80510141 is a prime.

It is a super-3 number, since 3×805103973 (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80510399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18729 + ... + 22622.

It is an arithmetic number, because the mean of its divisors is an integer number (7443360).

Almost surely, 280510397 is an apocalyptic number.

It is an amenable number.

80510397 is a deficient number, since it is larger than the sum of its proper divisors (38583363).

80510397 is a wasteful number, since it uses less digits than its factorization.

80510397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41424.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 80510397 is about 8972.7586059138. The cubic root of 80510397 is about 431.8013436322.

The spelling of 80510397 in words is "eighty million, five hundred ten thousand, three hundred ninety-seven".

Divisors: 1 3 11 33 59 177 649 1947 41351 124053 454861 1364583 2439709 7319127 26836799 80510397