72141628 has 24 divisors (see below), whose sum is σ = 136886400. Its totient is φ = 33069120.

The previous prime is 72141617. The next prime is 72141631. The reversal of 72141628 is 82614127.

It is a self number, because there is not a number n which added to its sum of digits gives 72141628.

It is a congruent number.

It is an unprimeable number.

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, 3093 + ... + 12403.

It is an arithmetic number, because the mean of its divisors is an integer number (5703600).

Almost surely, 2^72141628 is an apocalyptic number.

It is an amenable number.

72141628 is a deficient number, since it is larger than the sum of its proper divisors (64744772).

72141628 is a wasteful number, since it uses less digits than its factorization.

72141628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477 (or 9475 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 72141628 is about 8493.6227841834. The cubic root of 72141628 is about 416.2893619797.

The spelling of 72141628 in words is "seventy-two million, one hundred forty-one thousand, six hundred twenty-eight".