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74894131 = 137378919
BaseRepresentation
bin1000111011011…
…00101100110011
312012221000102201
410131230230303
5123133103011
611233124031
71566406144
oct435545463
9165830381
1074894131
1139304084
12210b9617
1312693370
149d37acb
156895cc1
hex476cb33

74894131 has 8 divisors (see below), whose sum is σ = 81761120. Its totient is φ = 68185152.

The previous prime is 74894119. The next prime is 74894147. The reversal of 74894131 is 13149847.

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

It is a cyclic number.

It is not a de Polignac number, because 74894131 - 213 = 74885939 is a prime.

It is a super-2 number, since 2×748941312 = 11218261716490322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74894111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38511 + ... + 40408.

It is an arithmetic number, because the mean of its divisors is an integer number (10220140).

Almost surely, 274894131 is an apocalyptic number.

74894131 is a deficient number, since it is larger than the sum of its proper divisors (6866989).

74894131 is a wasteful number, since it uses less digits than its factorization.

74894131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79005.

The product of its digits is 24192, while the sum is 37.

The square root of 74894131 is about 8654.1395297280. The cubic root of 74894131 is about 421.5178094932.

The spelling of 74894131 in words is "seventy-four million, eight hundred ninety-four thousand, one hundred thirty-one".

Divisors: 1 13 73 949 78919 1025947 5761087 74894131