72470735 has 4 divisors (see below), whose sum is σ = 86964888. Its totient is φ = 57976584.

The previous prime is 72470719. The next prime is 72470747. The reversal of 72470735 is 53707427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53707427 = 1217 ⋅44131.

It is a cyclic number.

It is not a de Polignac number, because 72470735 - 2⁴ = 72470719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72470695 and 72470704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7247069 + ... + 7247078.

It is an arithmetic number, because the mean of its divisors is an integer number (21741222).

Almost surely, 2^72470735 is an apocalyptic number.

72470735 is a deficient number, since it is larger than the sum of its proper divisors (14494153).

72470735 is a wasteful number, since it uses less digits than its factorization.

72470735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14494152.

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 72470735 is about 8512.9745095354. The cubic root of 72470735 is about 416.9214331717.

It can be divided in two parts, 7 and 2470735, that added together give a palindrome (2470742).

The spelling of 72470735 in words is "seventy-two million, four hundred seventy thousand, seven hundred thirty-five".