72416047 has 4 divisors (see below), whose sum is σ = 78999336. Its totient is φ = 65832760.

The previous prime is 72416041. The next prime is 72416051. The reversal of 72416047 is 74061427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74061427 = 11 ⋅6732857.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72416047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72416041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3291628 + ... + 3291649.

It is an arithmetic number, because the mean of its divisors is an integer number (19749834).

Almost surely, 2^72416047 is an apocalyptic number.

72416047 is a deficient number, since it is larger than the sum of its proper divisors (6583289).

72416047 is a wasteful number, since it uses less digits than its factorization.

72416047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6583288.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 72416047 is about 8509.7618650583. The cubic root of 72416047 is about 416.8165341067.

The spelling of 72416047 in words is "seventy-two million, four hundred sixteen thousand, forty-seven".