30283020 has 72 divisors (see below), whose sum is σ = 94361904. Its totient is φ = 7855488.

The previous prime is 30283013. The next prime is 30283031. The reversal of 30283020 is 2038203.

It is a super-2 number, since 2×30283020² = 1834122600640800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30282984 and 30283002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4387 + ... + 8933.

It is an arithmetic number, because the mean of its divisors is an integer number (1310582).

Almost surely, 2^30283020 is an apocalyptic number.

30283020 is a gapful number since it is divisible by the number (30) 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 30283020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47180952).

30283020 is an abundant number, since it is smaller than the sum of its proper divisors (64078884).

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

30283020 is a wasteful number, since it uses less digits than its factorization.

30283020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599 (or 4594 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 30283020 is about 5503.0009994548. Note that the first 3 decimals coincide. The cubic root of 30283020 is about 311.6973149280.

The spelling of 30283020 in words is "thirty million, two hundred eighty-three thousand, twenty".