72024331 has 4 divisors (see below), whose sum is σ = 73781064. Its totient is φ = 70267600.

The previous prime is 72024289. The next prime is 72024341. The reversal of 72024331 is 13342027.

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 72024331 - 2⁷ = 72024203 is a prime.

It is a super-2 number, since 2×72024331² = 10375008511995122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72024341) 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, 878305 + ... + 878386.

It is an arithmetic number, because the mean of its divisors is an integer number (18445266).

Almost surely, 2^72024331 is an apocalyptic number.

72024331 is a deficient number, since it is larger than the sum of its proper divisors (1756733).

72024331 is a wasteful number, since it uses less digits than its factorization.

72024331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756732.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 72024331 is about 8486.7149710592. The cubic root of 72024331 is about 416.0636209248.

Adding to 72024331 its reverse (13342027), we get a palindrome (85366358).

The spelling of 72024331 in words is "seventy-two million, twenty-four thousand, three hundred thirty-one".