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74640095 = 531481549
BaseRepresentation
bin1000111001011…
…10101011011111
312012110002221222
410130232223133
5123101440340
611223443555
71564300415
oct434565337
9165402858
1074640095
1139150232
1220bb65bb
131260484a
149cad2b5
1568458b5
hex472eadf

74640095 has 8 divisors (see below), whose sum is σ = 92457600. Its totient is φ = 57785760.

The previous prime is 74640073. The next prime is 74640101. The reversal of 74640095 is 59004647.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74640095 - 28 = 74639839 is a prime.

It is a super-2 number, since 2×746400952 = 11142287563218050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240620 + ... + 240929.

It is an arithmetic number, because the mean of its divisors is an integer number (11557200).

Almost surely, 274640095 is an apocalyptic number.

74640095 is a deficient number, since it is larger than the sum of its proper divisors (17817505).

74640095 is a wasteful number, since it uses less digits than its factorization.

74640095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481585.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 74640095 is about 8639.4499246190. The cubic root of 74640095 is about 421.0406826667.

The spelling of 74640095 in words is "seventy-four million, six hundred forty thousand, ninety-five".

Divisors: 1 5 31 155 481549 2407745 14928019 74640095