78473434 has 16 divisors (see below), whose sum is σ = 127999872. Its totient is φ = 35865648.

The previous prime is 78473419. The next prime is 78473459. The reversal of 78473434 is 43437487.

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, 11974 + ... + 17329.

It is an arithmetic number, because the mean of its divisors is an integer number (7999992).

Almost surely, 2^78473434 is an apocalyptic number.

78473434 is a deficient number, since it is larger than the sum of its proper divisors (49526438).

78473434 is a wasteful number, since it uses less digits than its factorization.

78473434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29421.

The product of its digits is 225792, while the sum is 40.

The square root of 78473434 is about 8858.5232403601. The cubic root of 78473434 is about 428.1285788608.

The spelling of 78473434 in words is "seventy-eight million, four hundred seventy-three thousand, four hundred thirty-four".