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74807369 = 7213117437
BaseRepresentation
bin1000111010101…
…11100001001001
312012202121102022
410131113201021
5123122313434
611231214225
71565565200
oct435274111
9165677368
1074807369
113925497a
1221077375
1312662a20
149d14237
15687a22e
hex4757849

74807369 has 12 divisors (see below), whose sum is σ = 93715524. Its totient is φ = 59187744.

The previous prime is 74807347. The next prime is 74807393. The reversal of 74807369 is 96370847.

It can be written as a sum of positive squares in 2 ways, for example, as 44689225 + 30118144 = 6685^2 + 5488^2 .

It is not a de Polignac number, because 74807369 - 28 = 74807113 is a prime.

It is a super-2 number, since 2×748073692 = 11192284913404322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74801369) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 58082 + ... + 59355.

It is an arithmetic number, because the mean of its divisors is an integer number (7809627).

Almost surely, 274807369 is an apocalyptic number.

It is an amenable number.

74807369 is a deficient number, since it is larger than the sum of its proper divisors (18908155).

74807369 is a wasteful number, since it uses less digits than its factorization.

74807369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117464 (or 117457 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 74807369 is about 8649.1253315003. The cubic root of 74807369 is about 421.3549758189.

The spelling of 74807369 in words is "seventy-four million, eight hundred seven thousand, three hundred sixty-nine".

Divisors: 1 7 13 49 91 637 117437 822059 1526681 5754413 10686767 74807369