30492228 has 48 divisors (see below), whose sum is σ = 77728896. Its totient is φ = 9246720.

The previous prime is 30492221. The next prime is 30492257. The reversal of 30492228 is 82229403.

It is a junction number, because it is equal to n+sod(n) for n = 30492195 and 30492204.

It is not an unprimeable number, because it can be changed into a prime (30492221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9700 + ... + 12452.

It is an arithmetic number, because the mean of its divisors is an integer number (1619352).

Almost surely, 2^30492228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30492228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38864448).

30492228 is an abundant number, since it is smaller than the sum of its proper divisors (47236668).

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

30492228 is a wasteful number, since it uses less digits than its factorization.

30492228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844 (or 2842 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 30492228 is about 5521.9768199441. The cubic root of 30492228 is about 312.4134476033.

The spelling of 30492228 in words is "thirty million, four hundred ninety-two thousand, two hundred twenty-eight".