728708734 has 24 divisors (see below), whose sum is σ = 1194733800. Its totient is φ = 333167328.

The previous prime is 728708711. The next prime is 728708737. The reversal of 728708734 is 437807827.

It is a super-3 number, since 3×728708734³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728708737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26092 + ... + 46240.

It is an arithmetic number, because the mean of its divisors is an integer number (49780575).

Almost surely, 2^728708734 is an apocalyptic number.

728708734 is a deficient number, since it is larger than the sum of its proper divisors (466025066).

728708734 is a wasteful number, since it uses less digits than its factorization.

728708734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20284 (or 20271 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 46.

The square root of 728708734 is about 26994.6056463139. The cubic root of 728708734 is about 899.8801214816.

The spelling of 728708734 in words is "seven hundred twenty-eight million, seven hundred eight thousand, seven hundred thirty-four".