34389878 has 16 divisors (see below), whose sum is σ = 54730080. Its totient is φ = 16150656.

The previous prime is 34389871. The next prime is 34389889. The reversal of 34389878 is 87898343.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34389871) 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, 27368 + ... + 28596.

It is an arithmetic number, because the mean of its divisors is an integer number (3420630).

Almost surely, 2^34389878 is an apocalyptic number.

34389878 is a deficient number, since it is larger than the sum of its proper divisors (20340202).

34389878 is a wasteful number, since it uses less digits than its factorization.

34389878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071.

The product of its digits is 1161216, while the sum is 50.

The square root of 34389878 is about 5864.2883626234. The cubic root of 34389878 is about 325.1947645214.

The spelling of 34389878 in words is "thirty-four million, three hundred eighty-nine thousand, eight hundred seventy-eight".