78472735 has 12 divisors (see below), whose sum is σ = 103506984. Its totient is φ = 57070640.

The previous prime is 78472727. The next prime is 78472747. The reversal of 78472735 is 53727487.

It is not a de Polignac number, because 78472735 - 2³ = 78472727 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 78472691 and 78472700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64249 + ... + 65458.

It is an arithmetic number, because the mean of its divisors is an integer number (8625582).

Almost surely, 2^78472735 is an apocalyptic number.

78472735 is a deficient number, since it is larger than the sum of its proper divisors (25034249).

78472735 is a wasteful number, since it uses less digits than its factorization.

78472735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129734 (or 129723 counting only the distinct ones).

The product of its digits is 329280, while the sum is 43.

The square root of 78472735 is about 8858.4837867436. The cubic root of 78472735 is about 428.1273076758.

The spelling of 78472735 in words is "seventy-eight million, four hundred seventy-two thousand, seven hundred thirty-five".