728458270 has 16 divisors (see below), whose sum is σ = 1341719280. Its totient is φ = 284606784.

The previous prime is 728458261. The next prime is 728458301. The reversal of 728458270 is 72854827.

It is a super-2 number, since 2×728458270² = 1061302902262785800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846615 + ... + 847474.

It is an arithmetic number, because the mean of its divisors is an integer number (83857455).

Almost surely, 2^728458270 is an apocalyptic number.

728458270 is a deficient number, since it is larger than the sum of its proper divisors (613261010).

728458270 is a wasteful number, since it uses less digits than its factorization.

728458270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694139.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 728458270 is about 26989.9660985337. The cubic root of 728458270 is about 899.7770105990. Note that the first 3 decimals are identical.

It can be divided in two parts, 7284 and 58270, that multiplied together give a triangular number (424438680 = T₂₉₁₃₅).

The spelling of 728458270 in words is "seven hundred twenty-eight million, four hundred fifty-eight thousand, two hundred seventy".