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80319477 = 372546391
BaseRepresentation
bin1001100100110…
…01001111110101
312121010122121110
410302121033311
5131030210402
611545305233
71663463400
oct462311765
9177118543
1080319477
114137a237
1222a95219
1313842924
14a94ad37
1570b856c
hex4c993f5

80319477 has 12 divisors (see below), whose sum is σ = 124577376. Its totient is φ = 45896760.

The previous prime is 80319457. The next prime is 80319487. The reversal of 80319477 is 77491308.

It is not a de Polignac number, because 80319477 - 26 = 80319413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80319457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273049 + ... + 273342.

It is an arithmetic number, because the mean of its divisors is an integer number (10381448).

Almost surely, 280319477 is an apocalyptic number.

It is an amenable number.

80319477 is a deficient number, since it is larger than the sum of its proper divisors (44257899).

80319477 is a wasteful number, since it uses less digits than its factorization.

80319477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546408 (or 546401 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 80319477 is about 8962.1134226253. The cubic root of 80319477 is about 431.4597531194.

The spelling of 80319477 in words is "eighty million, three hundred nineteen thousand, four hundred seventy-seven".

Divisors: 1 3 7 21 49 147 546391 1639173 3824737 11474211 26773159 80319477