102640834 has 8 divisors (see below), whose sum is σ = 154313280. Its totient is φ = 51203076.

The previous prime is 102640823. The next prime is 102640859. The reversal of 102640834 is 438046201.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57574 + ... + 59329.

It is an arithmetic number, because the mean of its divisors is an integer number (19289160).

Almost surely, 2^102640834 is an apocalyptic number.

102640834 is a deficient number, since it is larger than the sum of its proper divisors (51672446).

102640834 is a wasteful number, since it uses less digits than its factorization.

102640834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117344.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 102640834 is about 10131.1812736719. The cubic root of 102640834 is about 468.2093232900.

The spelling of 102640834 in words is "one hundred two million, six hundred forty thousand, eight hundred thirty-four".