72369847 has 4 divisors (see below), whose sum is σ = 78948936. Its totient is φ = 65790760.

The previous prime is 72369827. The next prime is 72369853. The reversal of 72369847 is 74896327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72369847 - 2⁷ = 72369719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72369797 and 72369806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72369827) 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, 3289528 + ... + 3289549.

It is an arithmetic number, because the mean of its divisors is an integer number (19737234).

Almost surely, 2^72369847 is an apocalyptic number.

72369847 is a deficient number, since it is larger than the sum of its proper divisors (6579089).

72369847 is a wasteful number, since it uses less digits than its factorization.

72369847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579088.

The product of its digits is 508032, while the sum is 46.

The square root of 72369847 is about 8507.0469024215. The cubic root of 72369847 is about 416.7278750258.

The spelling of 72369847 in words is "seventy-two million, three hundred sixty-nine thousand, eight hundred forty-seven".