30221850 has 48 divisors (see below), whose sum is σ = 75655872. Its totient is φ = 7983360.

The previous prime is 30221843. The next prime is 30221887. The reversal of 30221850 is 5812203.

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, 16059 + ... + 17841.

It is an arithmetic number, because the mean of its divisors is an integer number (1576164).

Almost surely, 2^30221850 is an apocalyptic number.

30221850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30221850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37827936).

30221850 is an abundant number, since it is smaller than the sum of its proper divisors (45434022).

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

30221850 is a wasteful number, since it uses less digits than its factorization.

30221850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 30221850 is about 5497.4403134550. The cubic root of 30221850 is about 311.4873031023.

The spelling of 30221850 in words is "thirty million, two hundred twenty-one thousand, eight hundred fifty".