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74062180 = 2253703109
BaseRepresentation
bin1000110101000…
…01100101100100
312011100202012201
410122201211210
5122424442210
611203224244
71556342503
oct432414544
9164322181
1074062180
1138896015
1220978084
131246179a
149b9c83a
15677e53a
hex46a1964

74062180 has 12 divisors (see below), whose sum is σ = 155530620. Its totient is φ = 29624864.

The previous prime is 74062127. The next prime is 74062181. The reversal of 74062180 is 8126047.

It can be written as a sum of positive squares in 2 ways, for example, as 56220004 + 17842176 = 7498^2 + 4224^2 .

It is not an unprimeable number, because it can be changed into a prime (74062181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851535 + ... + 1851574.

It is an arithmetic number, because the mean of its divisors is an integer number (12960885).

Almost surely, 274062180 is an apocalyptic number.

It is an amenable number.

74062180 is an abundant number, since it is smaller than the sum of its proper divisors (81468440).

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

74062180 is a wasteful number, since it uses less digits than its factorization.

74062180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703118 (or 3703116 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 74062180 is about 8605.9386472366. The cubic root of 74062180 is about 419.9512037036.

The spelling of 74062180 in words is "seventy-four million, sixty-two thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 3703109 7406218 14812436 18515545 37031090 74062180