78106834 has 32 divisors (see below), whose sum is σ = 135938880. Its totient is φ = 33348672.

The previous prime is 78106813. The next prime is 78106837. The reversal of 78106834 is 43860187.

It is a happy number.

It is a super-2 number, since 2×78106834² = 12201355035007112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78106793 and 78106802.

It is not an unprimeable number, because it can be changed into a prime (78106837) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19404 + ... + 23080.

It is an arithmetic number, because the mean of its divisors is an integer number (4248090).

Almost surely, 2^78106834 is an apocalyptic number.

78106834 is a deficient number, since it is larger than the sum of its proper divisors (57832046).

78106834 is a wasteful number, since it uses less digits than its factorization.

78106834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 78106834 is about 8837.8070809449. The cubic root of 78106834 is about 427.4608497827.

The spelling of 78106834 in words is "seventy-eight million, one hundred six thousand, eight hundred thirty-four".