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80739351 = 32711116507
BaseRepresentation
bin1001100111111…
…11110000010111
312121220222120100
410303333300113
5131132124401
612002305143
72000162460
oct463776027
9177828510
1080739351
1141636740
12230581b3
131395ba84
14aa19d67
15714cb86
hex4cffc17

80739351 has 24 divisors (see below), whose sum is σ = 145401984. Its totient is φ = 41942160.

The previous prime is 80739319. The next prime is 80739353. The reversal of 80739351 is 15393708.

It is not a de Polignac number, because 80739351 - 25 = 80739319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80739353) 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 23 ways as a sum of consecutive naturals, for example, 57561 + ... + 58946.

It is an arithmetic number, because the mean of its divisors is an integer number (6058416).

Almost surely, 280739351 is an apocalyptic number.

80739351 is a deficient number, since it is larger than the sum of its proper divisors (64662633).

80739351 is a wasteful number, since it uses less digits than its factorization.

80739351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116531 (or 116528 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 80739351 is about 8985.5078320594. The cubic root of 80739351 is about 432.2102725064.

It can be divided in two parts, 8073 and 9351, that added together give a square (17424 = 1322).

The spelling of 80739351 in words is "eighty million, seven hundred thirty-nine thousand, three hundred fifty-one".

Divisors: 1 3 7 9 11 21 33 63 77 99 231 693 116507 349521 815549 1048563 1281577 2446647 3844731 7339941 8971039 11534193 26913117 80739351