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83274031 = 106977899
BaseRepresentation
bin1001111011010…
…10100100101111
312210200202111101
410331222210233
5132304232111
612132503531
72030550301
oct475524457
9183622441
1083274031
1143008015
1223a7aba7
1314338699
14b0b9971
15749dbc1
hex4f6a92f

83274031 has 4 divisors (see below), whose sum is σ = 83353000. Its totient is φ = 83195064.

The previous prime is 83274011. The next prime is 83274043. The reversal of 83274031 is 13047238.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13047238 = 26523619.

It is a cyclic number.

It is not a de Polignac number, because 83274031 - 219 = 82749743 is a prime.

It is a super-2 number, since 2×832740312 = 13869128477977922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83274011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37881 + ... + 40018.

It is an arithmetic number, because the mean of its divisors is an integer number (20838250).

Almost surely, 283274031 is an apocalyptic number.

83274031 is a deficient number, since it is larger than the sum of its proper divisors (78969).

83274031 is a wasteful number, since it uses less digits than its factorization.

83274031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78968.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 83274031 is about 9125.4605911154. The cubic root of 83274031 is about 436.6865970612.

The spelling of 83274031 in words is "eighty-three million, two hundred seventy-four thousand, thirty-one".

Divisors: 1 1069 77899 83274031