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74444447 = 7114012411
BaseRepresentation
bin1000110111111…
…10111010011111
312012002011120202
410123332322133
5123024210242
611215334115
71562524130
oct433767237
9165064522
1074444447
1139027240
1220b2133b
131256678c
149c5bc87
156807932
hex46fee9f

74444447 has 16 divisors (see below), whose sum is σ = 93083904. Its totient is φ = 57840000.

The previous prime is 74444441. The next prime is 74444449.

74444447 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 74444447 - 24 = 74444431 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 74444447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74444441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29672 + ... + 32082.

It is an arithmetic number, because the mean of its divisors is an integer number (5817744).

Almost surely, 274444447 is an apocalyptic number.

74444447 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

74444447 is a deficient number, since it is larger than the sum of its proper divisors (18639457).

74444447 is a wasteful number, since it uses less digits than its factorization.

74444447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830.

The product of its digits is 200704, while the sum is 38.

The square root of 74444447 is about 8628.1195517911. The cubic root of 74444447 is about 420.6724808870.

The spelling of 74444447 in words is "seventy-four million, four hundred forty-four thousand, four hundred forty-seven".

Divisors: 1 7 11 77 401 2411 2807 4411 16877 26521 30877 185647 966811 6767677 10634921 74444447