73272643 has 8 divisors (see below), whose sum is σ = 73904688. Its totient is φ = 72643584.

The previous prime is 73272629. The next prime is 73272679. The reversal of 73272643 is 34627237.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73272643 - 2⁹ = 73272131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73272599 and 73272608.

It is not an unprimeable number, because it can be changed into a prime (73272613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85071 + ... + 85927.

It is an arithmetic number, because the mean of its divisors is an integer number (9238086).

Almost surely, 2^73272643 is an apocalyptic number.

73272643 is a deficient number, since it is larger than the sum of its proper divisors (632045).

73272643 is a wasteful number, since it uses less digits than its factorization.

73272643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its digits is 42336, while the sum is 34.

The square root of 73272643 is about 8559.9441002848. The cubic root of 73272643 is about 418.4535780573.

The spelling of 73272643 in words is "seventy-three million, two hundred seventy-two thousand, six hundred forty-three".