30233028 has 72 divisors (see below), whose sum is σ = 85173312. Its totient is φ = 8175168.

The previous prime is 30233011. The next prime is 30233059. The reversal of 30233028 is 82033203.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 30232995 and 30233013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29826 + ... + 30822.

Almost surely, 2^30233028 is an apocalyptic number.

30233028 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30233028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42586656).

30233028 is an abundant number, since it is smaller than the sum of its proper divisors (54940284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30233028 is a wasteful number, since it uses less digits than its factorization.

30233028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 30233028 is about 5498.4568744330. The cubic root of 30233028 is about 311.5257011035.

The spelling of 30233028 in words is "thirty million, two hundred thirty-three thousand, twenty-eight".