78472135 has 16 divisors (see below), whose sum is σ = 107954496. Its totient is φ = 53641728.

The previous prime is 78472087. The next prime is 78472151. The reversal of 78472135 is 53127487.

It is not a de Polignac number, because 78472135 - 2¹³ = 78463943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78472094 and 78472103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8469 + ... + 15121.

It is an arithmetic number, because the mean of its divisors is an integer number (6747156).

Almost surely, 2^78472135 is an apocalyptic number.

78472135 is a deficient number, since it is larger than the sum of its proper divisors (29482361).

78472135 is a wasteful number, since it uses less digits than its factorization.

78472135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002.

The product of its digits is 47040, while the sum is 37.

The square root of 78472135 is about 8858.4499208383. The cubic root of 78472135 is about 428.1262165238.

The spelling of 78472135 in words is "seventy-eight million, four hundred seventy-two thousand, one hundred thirty-five".