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80440854 = 23136071699
BaseRepresentation
bin1001100101101…
…10111000010110
312121100211002220
410302312320112
5131043101404
611552043210
71664510304
oct462667026
9177324086
1080440854
114145244a
1222b33506
1313885c50
14a97d274
1570de4d9
hex4cb6e16

80440854 has 32 divisors (see below), whose sum is σ = 173644800. Its totient is φ = 24695712.

The previous prime is 80440853. The next prime is 80440859. The reversal of 80440854 is 45804408.

It is a super-3 number, since 3×804408543 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80440853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46497 + ... + 48195.

It is an arithmetic number, because the mean of its divisors is an integer number (5426400).

Almost surely, 280440854 is an apocalyptic number.

80440854 is an abundant number, since it is smaller than the sum of its proper divisors (93203946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80440854 is a wasteful number, since it uses less digits than its factorization.

80440854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324.

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 80440854 is about 8968.8825390904. The cubic root of 80440854 is about 431.6769811806.

The spelling of 80440854 in words is "eighty million, four hundred forty thousand, eight hundred fifty-four".

Divisors: 1 2 3 6 13 26 39 78 607 1214 1699 1821 3398 3642 5097 7891 10194 15782 22087 23673 44174 47346 66261 132522 1031293 2062586 3093879 6187758 13406809 26813618 40220427 80440854