28273030 has 16 divisors (see below), whose sum is σ = 50974560. Its totient is φ = 11290752.

The previous prime is 28273013. The next prime is 28273033. The reversal of 28273030 is 3037282.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28272986 and 28273004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28273033) 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, 5326 + ... + 9214.

It is an arithmetic number, because the mean of its divisors is an integer number (3185910).

Almost surely, 2^28273030 is an apocalyptic number.

28273030 is a deficient number, since it is larger than the sum of its proper divisors (22701530).

28273030 is a wasteful number, since it uses less digits than its factorization.

28273030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 28273030 is about 5317.2389451669. The cubic root of 28273030 is about 304.6427062179.

The spelling of 28273030 in words is "twenty-eight million, two hundred seventy-three thousand, thirty".