728227834 has 4 divisors (see below), whose sum is σ = 1092341754. Its totient is φ = 364113916.

The previous prime is 728227813. The next prime is 728227847. The reversal of 728227834 is 438722827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 438722827 = 977 ⋅449051.

It can be written as a sum of positive squares in only one way, i.e., 622652209 + 105575625 = 24953^2 + 10275^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182056957 + ... + 182056960.

Almost surely, 2^728227834 is an apocalyptic number.

728227834 is a deficient number, since it is larger than the sum of its proper divisors (364113920).

728227834 is a wasteful number, since it uses less digits than its factorization.

728227834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364113919.

The product of its digits is 301056, while the sum is 43.

The square root of 728227834 is about 26985.6968411045. The cubic root of 728227834 is about 899.6821239548.

It can be divided in two parts, 72822 and 7834, that added together give a square (80656 = 284²).

The spelling of 728227834 in words is "seven hundred twenty-eight million, two hundred twenty-seven thousand, eight hundred thirty-four".