83828643 has 8 divisors (see below), whose sum is σ = 114792528. Its totient is φ = 54375264.

The previous prime is 83828621. The next prime is 83828651. The reversal of 83828643 is 34682838.

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

It is not a de Polignac number, because 83828643 - 2⁵ = 83828611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83828595 and 83828604.

It is not an unprimeable number, because it can be changed into a prime (83823643) 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, 377496 + ... + 377717.

It is an arithmetic number, because the mean of its divisors is an integer number (14349066).

Almost surely, 2^83828643 is an apocalyptic number.

83828643 is a deficient number, since it is larger than the sum of its proper divisors (30963885).

83828643 is a wasteful number, since it uses less digits than its factorization.

83828643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755253.

The product of its digits is 221184, while the sum is 42.

The square root of 83828643 is about 9155.7983267436. The cubic root of 83828643 is about 437.6539091693.

The spelling of 83828643 in words is "eighty-three million, eight hundred twenty-eight thousand, six hundred forty-three".