728434358 has 4 divisors (see below), whose sum is σ = 1092651540. Its totient is φ = 364217178.

The previous prime is 728434351. The next prime is 728434387. The reversal of 728434358 is 853434827.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×728434358² = 1061233227829744328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728434351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182108588 + ... + 182108591.

It is an arithmetic number, because the mean of its divisors is an integer number (273162885).

Almost surely, 2^728434358 is an apocalyptic number.

728434358 is a deficient number, since it is larger than the sum of its proper divisors (364217182).

728434358 is a wasteful number, since it uses less digits than its factorization.

728434358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364217181.

The product of its digits is 645120, while the sum is 44.

The square root of 728434358 is about 26989.5231154609. The cubic root of 728434358 is about 899.7671652840.

The spelling of 728434358 in words is "seven hundred twenty-eight million, four hundred thirty-four thousand, three hundred fifty-eight".