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80438798 = 21117215077
BaseRepresentation
bin1001100101101…
…10011000001110
312121100201021202
410302312120032
5131043020143
611552025502
71664501306
oct462663016
9177321252
1080438798
1141450950
1222b32292
131388502b
14a97c606
1570ddab8
hex4cb660e

80438798 has 16 divisors (see below), whose sum is σ = 139370544. Its totient is φ = 34412160.

The previous prime is 80438783. The next prime is 80438803. The reversal of 80438798 is 89783408.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 107165 + ... + 107912.

It is an arithmetic number, because the mean of its divisors is an integer number (8710659).

Almost surely, 280438798 is an apocalyptic number.

80438798 is a deficient number, since it is larger than the sum of its proper divisors (58931746).

80438798 is a wasteful number, since it uses less digits than its factorization.

80438798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215107.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 80438798 is about 8968.7679198427. The cubic root of 80438798 is about 431.6733033835.

The spelling of 80438798 in words is "eighty million, four hundred thirty-eight thousand, seven hundred ninety-eight".

Divisors: 1 2 11 17 22 34 187 374 215077 430154 2365847 3656309 4731694 7312618 40219399 80438798