Search a number
-
+
80289813 = 3172115551
BaseRepresentation
bin1001100100100…
…10000000010101
312121002010220210
410302102000111
5131023233223
611544520033
71663311042
oct462220025
9177063823
1080289813
1141359a1a
1222a80019
1313832286
14a9401c9
1570ae893
hex4c92015

80289813 has 8 divisors (see below), whose sum is σ = 107122176. Its totient is φ = 53492000.

The previous prime is 80289799. The next prime is 80289817. The reversal of 80289813 is 31898208.

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 80289813 - 26 = 80289749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80289817) 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, 2613 + ... + 12938.

It is an arithmetic number, because the mean of its divisors is an integer number (13390272).

Almost surely, 280289813 is an apocalyptic number.

It is an amenable number.

80289813 is a deficient number, since it is larger than the sum of its proper divisors (26832363).

80289813 is a wasteful number, since it uses less digits than its factorization.

80289813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17275.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 80289813 is about 8960.4583030111. The cubic root of 80289813 is about 431.4066302715.

The spelling of 80289813 in words is "eighty million, two hundred eighty-nine thousand, eight hundred thirteen".

Divisors: 1 3 1721 5163 15551 46653 26763271 80289813