34317978 has 32 divisors (see below), whose sum is σ = 72144000. Its totient is φ = 10862016.

The previous prime is 34317973. The next prime is 34317989. The reversal of 34317978 is 87971343.

It is a super-2 number, since 2×34317978² = 2355447228016968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (34317973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19728 + ... + 21396.

It is an arithmetic number, because the mean of its divisors is an integer number (2254500).

Almost surely, 2^34317978 is an apocalyptic number.

34317978 is an abundant number, since it is smaller than the sum of its proper divisors (37826022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34317978 is a wasteful number, since it uses less digits than its factorization.

34317978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846.

The product of its digits is 127008, while the sum is 42.

The square root of 34317978 is about 5858.1548289543. The cubic root of 34317978 is about 324.9679747536.

The spelling of 34317978 in words is "thirty-four million, three hundred seventeen thousand, nine hundred seventy-eight".