28913630 has 32 divisors (see below), whose sum is σ = 56073600. Its totient is φ = 10698912.

The previous prime is 28913627. The next prime is 28913639. The reversal of 28913630 is 3631982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28913639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6401 + ... + 9939.

It is an arithmetic number, because the mean of its divisors is an integer number (1752300).

Almost surely, 2^28913630 is an apocalyptic number.

28913630 is a deficient number, since it is larger than the sum of its proper divisors (27159970).

28913630 is a wasteful number, since it uses less digits than its factorization.

28913630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 28913630 is about 5377.1395741602. The cubic root of 28913630 is about 306.9263723669.

The spelling of 28913630 in words is "twenty-eight million, nine hundred thirteen thousand, six hundred thirty".