72324727 has 4 divisors (see below), whose sum is σ = 72380880. Its totient is φ = 72268576.

The previous prime is 72324713. The next prime is 72324739. The reversal of 72324727 is 72742327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72742327 = 7 ⋅10391761.

It is a cyclic number.

It is not a de Polignac number, because 72324727 - 2⁷ = 72324599 is a prime.

It is a super-2 number, since 2×72324727² = 10461732271249058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72324692 and 72324701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72324797) 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, 26098 + ... + 28735.

It is an arithmetic number, because the mean of its divisors is an integer number (18095220).

Almost surely, 2^72324727 is an apocalyptic number.

72324727 is a deficient number, since it is larger than the sum of its proper divisors (56153).

72324727 is a wasteful number, since it uses less digits than its factorization.

72324727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56152.

The product of its digits is 32928, while the sum is 34.

The square root of 72324727 is about 8504.3945698680. The cubic root of 72324727 is about 416.6412520676.

The spelling of 72324727 in words is "seventy-two million, three hundred twenty-four thousand, seven hundred twenty-seven".