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80337961 = 117303451
BaseRepresentation
bin1001100100111…
…01110000101001
312121011120222001
410302131300221
5131031303321
611545531001
71663601314
oct462356051
9177146861
1080337961
1141392110
1222aa3a61
131384b172
14a95397b
1570bdc91
hex4c9dc29

80337961 has 4 divisors (see below), whose sum is σ = 87641424. Its totient is φ = 73034500.

The previous prime is 80337949. The next prime is 80337997. The reversal of 80337961 is 16973308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-80337961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80337961.

It is not an unprimeable number, because it can be changed into a prime (80337161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3651715 + ... + 3651736.

It is an arithmetic number, because the mean of its divisors is an integer number (21910356).

Almost surely, 280337961 is an apocalyptic number.

It is an amenable number.

80337961 is a deficient number, since it is larger than the sum of its proper divisors (7303463).

80337961 is a wasteful number, since it uses less digits than its factorization.

80337961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303462.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 80337961 is about 8963.1445932775. The cubic root of 80337961 is about 431.4928479995.

The spelling of 80337961 in words is "eighty million, three hundred thirty-seven thousand, nine hundred sixty-one".

Divisors: 1 11 7303451 80337961