72199146 has 24 divisors (see below), whose sum is σ = 145734912. Its totient is φ = 23845000.

The previous prime is 72199129. The next prime is 72199151. The reversal of 72199146 is 64199127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287521 + ... + 287771.

It is an arithmetic number, because the mean of its divisors is an integer number (6072288).

Almost surely, 2^72199146 is an apocalyptic number.

72199146 is an abundant number, since it is smaller than the sum of its proper divisors (73535766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72199146 is a wasteful number, since it uses less digits than its factorization.

72199146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 447 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 72199146 is about 8497.0080616650. The cubic root of 72199146 is about 416.3999674258.

The spelling of 72199146 in words is "seventy-two million, one hundred ninety-nine thousand, one hundred forty-six".