728620156 has 48 divisors (see below), whose sum is σ = 1450939392. Its totient is φ = 317145600.

The previous prime is 728620129. The next prime is 728620159. The reversal of 728620156 is 651026827.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728620159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129555 + ... + 135061.

It is an arithmetic number, because the mean of its divisors is an integer number (30227904).

Almost surely, 2^728620156 is an apocalyptic number.

It is an amenable number.

728620156 is a deficient number, since it is larger than the sum of its proper divisors (722319236).

728620156 is a wasteful number, since it uses less digits than its factorization.

728620156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650 (or 5648 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 728620156 is about 26992.9649353308. The cubic root of 728620156 is about 899.8436584397.

The spelling of 728620156 in words is "seven hundred twenty-eight million, six hundred twenty thousand, one hundred fifty-six".