78711470 has 16 divisors (see below), whose sum is σ = 142466688. Its totient is φ = 31309920.

The previous prime is 78711463. The next prime is 78711499. The reversal of 78711470 is 7411787.

It is a self number, because there is not a number n which added to its sum of digits gives 78711470.

It is a congruent number.

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, 19934 + ... + 23553.

It is an arithmetic number, because the mean of its divisors is an integer number (8904168).

Almost surely, 2^78711470 is an apocalyptic number.

78711470 is a deficient number, since it is larger than the sum of its proper divisors (63755218).

78711470 is a wasteful number, since it uses less digits than its factorization.

78711470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43675.

The product of its (nonzero) digits is 10976, while the sum is 35.

The square root of 78711470 is about 8871.9484894808. The cubic root of 78711470 is about 428.5610273137.

The spelling of 78711470 in words is "seventy-eight million, seven hundred eleven thousand, four hundred seventy".