78513434 has 16 divisors (see below), whose sum is σ = 124432800. Its totient is φ = 37051344.

The previous prime is 78513431. The next prime is 78513443. The reversal of 78513434 is 43431587.

It is a junction number, because it is equal to n+sod(n) for n = 78513394 and 78513403.

It is not an unprimeable number, because it can be changed into a prime (78513431) by changing a digit.

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, 6797 + ... + 14255.

It is an arithmetic number, because the mean of its divisors is an integer number (7777050).

Almost surely, 2^78513434 is an apocalyptic number.

78513434 is a deficient number, since it is larger than the sum of its proper divisors (45919366).

78513434 is a wasteful number, since it uses less digits than its factorization.

78513434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7757.

The product of its digits is 40320, while the sum is 35.

The square root of 78513434 is about 8860.7806653816. The cubic root of 78513434 is about 428.2013093523.

The spelling of 78513434 in words is "seventy-eight million, five hundred thirteen thousand, four hundred thirty-four".