30502020 has 24 divisors (see below), whose sum is σ = 85405824. Its totient is φ = 8133856.

The previous prime is 30502019. The next prime is 30502051. The reversal of 30502020 is 2020503.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30501987 and 30502005.

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 7 ways as a sum of consecutive naturals, for example, 254124 + ... + 254243.

It is an arithmetic number, because the mean of its divisors is an integer number (3558576).

Almost surely, 2^30502020 is an apocalyptic number.

30502020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30502020 is an abundant number, since it is smaller than the sum of its proper divisors (54903804).

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

30502020 is a wasteful number, since it uses less digits than its factorization.

30502020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508379 (or 508377 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 30502020 is about 5522.8633877727. The cubic root of 30502020 is about 312.4468859063.

Adding to 30502020 its reverse (2020503), we get a palindrome (32522523).

The spelling of 30502020 in words is "thirty million, five hundred two thousand, twenty".