78106434 has 16 divisors (see below), whose sum is σ = 178529088. Its totient is φ = 22316112.

The previous prime is 78106421. The next prime is 78106451. The reversal of 78106434 is 43460187.

It is a super-2 number, since 2×78106434² = 12201230064392712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78106395 and 78106404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929797 + ... + 929880.

It is an arithmetic number, because the mean of its divisors is an integer number (11158068).

Almost surely, 2^78106434 is an apocalyptic number.

78106434 is an abundant number, since it is smaller than the sum of its proper divisors (100422654).

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

78106434 is a wasteful number, since it uses less digits than its factorization.

78106434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859689.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 78106434 is about 8837.7844508678. The cubic root of 78106434 is about 427.4601200786.

The spelling of 78106434 in words is "seventy-eight million, one hundred six thousand, four hundred thirty-four".