72433427 has 4 divisors (see below), whose sum is σ = 79018296. Its totient is φ = 65848560.

The previous prime is 72433423. The next prime is 72433433.

72433427 is nontrivially palindromic in base 10.

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 72433427 - 2² = 72433423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72433393 and 72433402.

It is not an unprimeable number, because it can be changed into a prime (72433421) by changing a digit.

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, 3292418 + ... + 3292439.

It is an arithmetic number, because the mean of its divisors is an integer number (19754574).

Almost surely, 2^72433427 is an apocalyptic number.

72433427 is a deficient number, since it is larger than the sum of its proper divisors (6584869).

72433427 is a wasteful number, since it uses less digits than its factorization.

72433427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6584868.

The product of its digits is 28224, while the sum is 32.

The square root of 72433427 is about 8510.7829839563. The cubic root of 72433427 is about 416.8498770475.

The spelling of 72433427 in words is "seventy-two million, four hundred thirty-three thousand, four hundred twenty-seven".