34001978 has 16 divisors (see below), whose sum is σ = 54466560. Its totient is φ = 15884400.

The previous prime is 34001969. The next prime is 34001983. The reversal of 34001978 is 87910043.

It is a super-2 number, since 2×34001978² = 2312269015824968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7658 + ... + 11253.

It is an arithmetic number, because the mean of its divisors is an integer number (3404160).

Almost surely, 2^34001978 is an apocalyptic number.

34001978 is a deficient number, since it is larger than the sum of its proper divisors (20464582).

34001978 is a wasteful number, since it uses less digits than its factorization.

34001978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18973.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 34001978 is about 5831.1215044792. The cubic root of 34001978 is about 323.9674623119.

The spelling of 34001978 in words is "thirty-four million, one thousand, nine hundred seventy-eight".