78477434 has 16 divisors (see below), whose sum is σ = 136814400. Its totient is φ = 33062784.

The previous prime is 78477431. The next prime is 78477479. The reversal of 78477434 is 43477487.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78477431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46679 + ... + 48330.

It is an arithmetic number, because the mean of its divisors is an integer number (8550900).

Almost surely, 2^78477434 is an apocalyptic number.

78477434 is a deficient number, since it is larger than the sum of its proper divisors (58336966).

78477434 is a wasteful number, since it uses less digits than its factorization.

78477434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95077.

The product of its digits is 526848, while the sum is 44.

The square root of 78477434 is about 8858.7490087484. The cubic root of 78477434 is about 428.1358530220.

The spelling of 78477434 in words is "seventy-eight million, four hundred seventy-seven thousand, four hundred thirty-four".