728366140 has 24 divisors (see below), whose sum is σ = 1610073360. Its totient is φ = 276012288.

The previous prime is 728366131. The next prime is 728366147. The reversal of 728366140 is 41663827.

It is a self number, because there is not a number n which added to its sum of digits gives 728366140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728366147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957997 + ... + 958756.

It is an arithmetic number, because the mean of its divisors is an integer number (67086390).

Almost surely, 2^728366140 is an apocalyptic number.

It is an amenable number.

728366140 is an abundant number, since it is smaller than the sum of its proper divisors (881707220).

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

728366140 is a wasteful number, since it uses less digits than its factorization.

728366140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916781 (or 1916779 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 728366140 is about 26988.2592991842. The cubic root of 728366140 is about 899.7390766251.

The spelling of 728366140 in words is "seven hundred twenty-eight million, three hundred sixty-six thousand, one hundred forty".