403728650 has 48 divisors (see below), whose sum is σ = 812057400. Its totient is φ = 148450560.

The previous prime is 403728643. The next prime is 403728659. The reversal of 403728650 is 56827304.

It is a happy number.

It is a Cunningham number, because it is equal to 20093²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 241081 + 403487569 = 491^2 + 20087^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 403728650.

It is not an unprimeable number, because it can be changed into a prime (403728659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173696 + ... + 176004.

Almost surely, 2^403728650 is an apocalyptic number.

403728650 is an abundant number, since it is smaller than the sum of its proper divisors (408328750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403728650 is a wasteful number, since it uses less digits than its factorization.

403728650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603 (or 2598 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 403728650 is about 20093.0000248843. Note that the first 4 decimals coincide. The cubic root of 403728650 is about 739.0886333388.

The spelling of 403728650 in words is "four hundred three million, seven hundred twenty-eight thousand, six hundred fifty".