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83004631 = 233608897
BaseRepresentation
bin1001111001010…
…00110011010111
312210012001221121
410330220303113
5132222122011
612123024411
72025346003
oct474506327
9183161847
1083004631
1142943676
122396b107
1314272b88
14b049703
157448e71
hex4f28cd7

83004631 has 4 divisors (see below), whose sum is σ = 86613552. Its totient is φ = 79395712.

The previous prime is 83004629. The next prime is 83004661. The reversal of 83004631 is 13640038.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13640038 = 26820019.

It is a cyclic number.

It is not a de Polignac number, because 83004631 - 21 = 83004629 is a prime.

It is a super-2 number, since 2×830046312 = 13779537534892322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83004596 and 83004605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83004661) 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, 1804426 + ... + 1804471.

It is an arithmetic number, because the mean of its divisors is an integer number (21653388).

Almost surely, 283004631 is an apocalyptic number.

83004631 is a deficient number, since it is larger than the sum of its proper divisors (3608921).

83004631 is a wasteful number, since it uses less digits than its factorization.

83004631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608920.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 83004631 is about 9110.6877347432. The cubic root of 83004631 is about 436.2151797453.

Adding to 83004631 its reverse (13640038), we get a palindrome (96644669).

The spelling of 83004631 in words is "eighty-three million, four thousand, six hundred thirty-one".

Divisors: 1 23 3608897 83004631