34402778 has 16 divisors (see below), whose sum is σ = 53101440. Its totient is φ = 16707936.

The previous prime is 34402763. The next prime is 34402789. The reversal of 34402778 is 87720443.

34402778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×34402778² = 2367102268234568, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11750 + ... + 14382.

It is an arithmetic number, because the mean of its divisors is an integer number (3318840).

Almost surely, 2^34402778 is an apocalyptic number.

34402778 is a deficient number, since it is larger than the sum of its proper divisors (18698662).

34402778 is a wasteful number, since it uses less digits than its factorization.

34402778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 34402778 is about 5865.3881371994. The cubic root of 34402778 is about 325.2354207482.

The spelling of 34402778 in words is "thirty-four million, four hundred two thousand, seven hundred seventy-eight".