28307030 has 32 divisors (see below), whose sum is σ = 53084160. Its totient is φ = 10856160.

The previous prime is 28307011. The next prime is 28307033. The reversal of 28307030 is 3070382.

It is a junction number, because it is equal to n+sod(n) for n = 28306987 and 28307005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28307033) 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, 39011 + ... + 39729.

It is an arithmetic number, because the mean of its divisors is an integer number (1658880).

Almost surely, 2^28307030 is an apocalyptic number.

28307030 is a deficient number, since it is larger than the sum of its proper divisors (24777130).

28307030 is a wasteful number, since it uses less digits than its factorization.

28307030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 28307030 is about 5320.4351325808. The cubic root of 28307030 is about 304.7647742902.

The spelling of 28307030 in words is "twenty-eight million, three hundred seven thousand, thirty".