72280229 has 8 divisors (see below), whose sum is σ = 83458368. Its totient is φ = 61315200.

The previous prime is 72280223. The next prime is 72280261. The reversal of 72280229 is 92208227.

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 72280229 - 2⁸ = 72279973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72280195 and 72280204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72280223) 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 7 ways as a sum of consecutive naturals, for example, 52547 + ... + 53904.

It is an arithmetic number, because the mean of its divisors is an integer number (10432296).

Almost surely, 2^72280229 is an apocalyptic number.

It is an amenable number.

72280229 is a deficient number, since it is larger than the sum of its proper divisors (11178139).

72280229 is a wasteful number, since it uses less digits than its factorization.

72280229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106555.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 72280229 is about 8501.7779905147. Note that the first 3 decimals coincide. The cubic root of 72280229 is about 416.5557879546. Note that the first 3 decimals are identical.

The spelling of 72280229 in words is "seventy-two million, two hundred eighty thousand, two hundred twenty-nine".