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82349231 = 671229093
BaseRepresentation
bin1001110100010…
…00110010101111
312201221202220112
410322020302233
5132040133411
612101010235
72016646136
oct472106257
9181852815
1082349231
1142536218
12236b397b
13140a3773
14ad1891d
157369b8b
hex4e88caf

82349231 has 4 divisors (see below), whose sum is σ = 83578392. Its totient is φ = 81120072.

The previous prime is 82349219. The next prime is 82349273. The reversal of 82349231 is 13294328.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82349231 - 26 = 82349167 is a prime.

It is a super-2 number, since 2×823492312 = 13562791692582722, 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 (82349431) 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, 614480 + ... + 614613.

It is an arithmetic number, because the mean of its divisors is an integer number (20894598).

Almost surely, 282349231 is an apocalyptic number.

82349231 is a deficient number, since it is larger than the sum of its proper divisors (1229161).

82349231 is a wasteful number, since it uses less digits than its factorization.

82349231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229160.

The product of its digits is 10368, while the sum is 32.

The square root of 82349231 is about 9074.6477066606. The cubic root of 82349231 is about 435.0640342603.

The spelling of 82349231 in words is "eighty-two million, three hundred forty-nine thousand, two hundred thirty-one".

Divisors: 1 67 1229093 82349231