72345628 has 12 divisors (see below), whose sum is σ = 128339680. Its totient is φ = 35677152.

The previous prime is 72345617. The next prime is 72345629. The reversal of 72345628 is 82654327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72345629) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 123588 + ... + 124171.

Almost surely, 2^72345628 is an apocalyptic number.

It is an amenable number.

72345628 is a deficient number, since it is larger than the sum of its proper divisors (55994052).

72345628 is a wasteful number, since it uses less digits than its factorization.

72345628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247836 (or 247834 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 72345628 is about 8505.6233163714. The cubic root of 72345628 is about 416.6813830180.

The spelling of 72345628 in words is "seventy-two million, three hundred forty-five thousand, six hundred twenty-eight".