28300030 has 16 divisors (see below), whose sum is σ = 55571184. Its totient is φ = 10290880.

The previous prime is 28300009. The next prime is 28300031. The reversal of 28300030 is 3000382.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28299977 and 28300013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128527 + ... + 128746.

It is an arithmetic number, because the mean of its divisors is an integer number (3473199).

Almost surely, 2^28300030 is an apocalyptic number.

28300030 is a deficient number, since it is larger than the sum of its proper divisors (27271154).

28300030 is a wasteful number, since it uses less digits than its factorization.

28300030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257291.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 28300030 is about 5319.7772509758. Note that the first 3 decimals coincide. The cubic root of 28300030 is about 304.7396506219.

The spelling of 28300030 in words is "twenty-eight million, three hundred thousand, thirty".