102689834 has 8 divisors (see below), whose sum is σ = 165883620. Its totient is φ = 47395296.

The previous prime is 102689833. The next prime is 102689849. The reversal of 102689834 is 438986201.

It can be written as a sum of positive squares in 2 ways, for example, as 84584809 + 18105025 = 9197^2 + 4255^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 102689791 and 102689800.

It is not an unprimeable number, because it can be changed into a prime (102689833) 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, 1974779 + ... + 1974830.

Almost surely, 2^102689834 is an apocalyptic number.

102689834 is a deficient number, since it is larger than the sum of its proper divisors (63193786).

102689834 is a wasteful number, since it uses less digits than its factorization.

102689834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949624.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 102689834 is about 10133.5992618615. The cubic root of 102689834 is about 468.2838180309.

It can be divided in two parts, 10268 and 9834, that added together give a palindrome (20102).

The spelling of 102689834 in words is "one hundred two million, six hundred eighty-nine thousand, eight hundred thirty-four".