72785229 has 8 divisors (see below), whose sum is σ = 105869472. Its totient is φ = 44112240.

The previous prime is 72785201. The next prime is 72785233. The reversal of 72785229 is 92258727.

It is a happy number.

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

It is not a de Polignac number, because 72785229 - 2⁷ = 72785101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72785329) 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, 1102774 + ... + 1102839.

It is an arithmetic number, because the mean of its divisors is an integer number (13233684).

Almost surely, 2^72785229 is an apocalyptic number.

It is an amenable number.

72785229 is a deficient number, since it is larger than the sum of its proper divisors (33084243).

72785229 is a wasteful number, since it uses less digits than its factorization.

72785229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205627.

The product of its digits is 141120, while the sum is 42.

The square root of 72785229 is about 8531.4259652182. The cubic root of 72785229 is about 417.5236536254.

The spelling of 72785229 in words is "seventy-two million, seven hundred eighty-five thousand, two hundred twenty-nine".