728144612390 has 64 divisors (see below), whose sum is σ = 1478635603200. Its totient is φ = 256296628224.

The previous prime is 728144612387. The next prime is 728144612423. The reversal of 728144612390 is 93216441827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 924587 + ... + 1520246.

It is an arithmetic number, because the mean of its divisors is an integer number (23103681300).

Almost surely, 2^728144612390 is an apocalyptic number.

728144612390 is an abundant number, since it is smaller than the sum of its proper divisors (750490990810).

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

728144612390 is a wasteful number, since it uses less digits than its factorization.

728144612390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444961.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 728144612390 in words is "seven hundred twenty-eight billion, one hundred forty-four million, six hundred twelve thousand, three hundred ninety".