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80708421 = 329927683
BaseRepresentation
bin1001100111110…
…00001101000101
312121212102010210
410303320031011
5131130132141
612001510033
72000003343
oct463701505
9177772123
1080708421
1141615482
1223042319
131394a981
14aa0c993
157143916
hex4cf8345

80708421 has 8 divisors (see below), whose sum is σ = 111322080. Its totient is φ = 51950192.

The previous prime is 80708413. The next prime is 80708437. The reversal of 80708421 is 12480708.

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 80708421 - 23 = 80708413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80708021) 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 7 ways as a sum of consecutive naturals, for example, 463755 + ... + 463928.

It is an arithmetic number, because the mean of its divisors is an integer number (13915260).

Almost surely, 280708421 is an apocalyptic number.

It is an amenable number.

80708421 is a deficient number, since it is larger than the sum of its proper divisors (30613659).

80708421 is a wasteful number, since it uses less digits than its factorization.

80708421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927715.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 80708421 is about 8983.7865624691. The cubic root of 80708421 is about 432.1550744277.

The spelling of 80708421 in words is "eighty million, seven hundred eight thousand, four hundred twenty-one".

Divisors: 1 3 29 87 927683 2783049 26902807 80708421