72280985 has 16 divisors (see below), whose sum is σ = 99408000. Its totient is φ = 49424256.

The previous prime is 72280969. The next prime is 72281003. The reversal of 72280985 is 58908227.

It is a happy number.

It is not a de Polignac number, because 72280985 - 2⁴ = 72280969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10541 + ... + 15989.

It is an arithmetic number, because the mean of its divisors is an integer number (6213000).

Almost surely, 2^72280985 is an apocalyptic number.

It is an amenable number.

72280985 is a deficient number, since it is larger than the sum of its proper divisors (27127015).

72280985 is a wasteful number, since it uses less digits than its factorization.

72280985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 72280985 is about 8501.8224516865. The cubic root of 72280985 is about 416.5572402424.

The spelling of 72280985 in words is "seventy-two million, two hundred eighty thousand, nine hundred eighty-five".