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80079621 = 327139839
BaseRepresentation
bin1001100010111…
…10101100000101
312120200110120220
410301132230011
5131000021441
611540214553
71661444166
oct461365405
9176613526
1080079621
1141226006
122299a459
131378a6bb
14a8c776d
15706c466
hex4c5eb05

80079621 has 8 divisors (see below), whose sum is σ = 106823040. Its totient is φ = 53361312.

The previous prime is 80079607. The next prime is 80079647. The reversal of 80079621 is 12697008.

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

It is not a de Polignac number, because 80079621 - 26 = 80079557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80079421) 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, 3220 + ... + 13058.

It is an arithmetic number, because the mean of its divisors is an integer number (13352880).

Almost surely, 280079621 is an apocalyptic number.

It is an amenable number.

80079621 is a deficient number, since it is larger than the sum of its proper divisors (26743419).

80079621 is a wasteful number, since it uses less digits than its factorization.

80079621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 80079621 is about 8948.7217522951. The cubic root of 80079621 is about 431.0298391459.

The spelling of 80079621 in words is "eighty million, seventy-nine thousand, six hundred twenty-one".

Divisors: 1 3 2713 8139 9839 29517 26693207 80079621