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80984415 = 355398961
BaseRepresentation
bin1001101001110…
…11100101011111
312122101102201210
410310323211133
5131213000130
612011435503
72002233111
oct464734537
9178342653
1080984415
1141793876
1223155b93
1313a16495
14aa813b1
15719a5b0
hex4d3b95f

80984415 has 8 divisors (see below), whose sum is σ = 129575088. Its totient is φ = 43191680.

The previous prime is 80984411. The next prime is 80984429. The reversal of 80984415 is 51448908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80984415 - 22 = 80984411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80984411) 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 7 ways as a sum of consecutive naturals, for example, 2699466 + ... + 2699495.

It is an arithmetic number, because the mean of its divisors is an integer number (16196886).

Almost surely, 280984415 is an apocalyptic number.

80984415 is a deficient number, since it is larger than the sum of its proper divisors (48590673).

80984415 is a wasteful number, since it uses less digits than its factorization.

80984415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5398969.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 80984415 is about 8999.1341250145. The cubic root of 80984415 is about 432.6471193622.

The spelling of 80984415 in words is "eighty million, nine hundred eighty-four thousand, four hundred fifteen".

Divisors: 1 3 5 15 5398961 16196883 26994805 80984415