72722985 has 8 divisors (see below), whose sum is σ = 116356800. Its totient is φ = 38785584.

The previous prime is 72722977. The next prime is 72722999. The reversal of 72722985 is 58922727.

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 72722985 - 2³ = 72722977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2424085 + ... + 2424114.

It is an arithmetic number, because the mean of its divisors is an integer number (14544600).

Almost surely, 2^72722985 is an apocalyptic number.

It is an amenable number.

72722985 is a deficient number, since it is larger than the sum of its proper divisors (43633815).

72722985 is a wasteful number, since it uses less digits than its factorization.

72722985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848207.

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

The square root of 72722985 is about 8527.7772602244. Note that the first 3 decimals coincide. The cubic root of 72722985 is about 417.4046012922.

The spelling of 72722985 in words is "seventy-two million, seven hundred twenty-two thousand, nine hundred eighty-five".