728051650 has 12 divisors (see below), whose sum is σ = 1354176162. Its totient is φ = 291220640.

The previous prime is 728051629. The next prime is 728051659. The reversal of 728051650 is 56150827.

It can be written as a sum of positive squares in 3 ways, for example, as 446181129 + 281870521 = 21123^2 + 16789^2 .

It is not an unprimeable number, because it can be changed into a prime (728051659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7280467 + ... + 7280566.

Almost surely, 2^728051650 is an apocalyptic number.

728051650 is a deficient number, since it is larger than the sum of its proper divisors (626124512).

728051650 is a wasteful number, since it uses less digits than its factorization.

728051650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14561045 (or 14561040 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 728051650 is about 26982.4322476681. The cubic root of 728051650 is about 899.6095631560.

The spelling of 728051650 in words is "seven hundred twenty-eight million, fifty-one thousand, six hundred fifty".