28903730 has 16 divisors (see below), whose sum is σ = 52686720. Its totient is φ = 11414832.

The previous prime is 28903717. The next prime is 28903741. The reversal of 28903730 is 3730982.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17504 + ... + 19083.

It is an arithmetic number, because the mean of its divisors is an integer number (3292920).

Almost surely, 2^28903730 is an apocalyptic number.

28903730 is a deficient number, since it is larger than the sum of its proper divisors (23782990).

28903730 is a wasteful number, since it uses less digits than its factorization.

28903730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36673.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 28903730 is about 5376.2189315540. The cubic root of 28903730 is about 306.8913379333.

The spelling of 28903730 in words is "twenty-eight million, nine hundred three thousand, seven hundred thirty".