83840378 has 8 divisors (see below), whose sum is σ = 126463680. Its totient is φ = 41685820.

The previous prime is 83840377. The next prime is 83840387. The reversal of 83840378 is 87304838.

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

It is not an unprimeable number, because it can be changed into a prime (83840377) 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, 116738 + ... + 117453.

It is an arithmetic number, because the mean of its divisors is an integer number (15807960).

Almost surely, 2^83840378 is an apocalyptic number.

83840378 is a deficient number, since it is larger than the sum of its proper divisors (42623302).

83840378 is a wasteful number, since it uses less digits than its factorization.

83840378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234372.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 83840378 is about 9156.4391550428. The cubic root of 83840378 is about 437.6743303078.

The spelling of 83840378 in words is "eighty-three million, eight hundred forty thousand, three hundred seventy-eight".