32628730 has 16 divisors (see below), whose sum is σ = 58807944. Its totient is φ = 13034560.

The previous prime is 32628727. The next prime is 32628731. The reversal of 32628730 is 3782623.

It can be written as a sum of positive squares in 4 ways, for example, as 19386409 + 13242321 = 4403^2 + 3639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32628692 and 32628701.

It is not an unprimeable number, because it can be changed into a prime (32628731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8520 + ... + 11740.

Almost surely, 2^32628730 is an apocalyptic number.

32628730 is a deficient number, since it is larger than the sum of its proper divisors (26179214).

32628730 is a wasteful number, since it uses less digits than its factorization.

32628730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 32628730 is about 5712.1563353956. The cubic root of 32628730 is about 319.5460033370.

The spelling of 32628730 in words is "thirty-two million, six hundred twenty-eight thousand, seven hundred thirty".