30502220 has 48 divisors (see below), whose sum is σ = 77064960. Its totient is φ = 9906624.

The previous prime is 30502211. The next prime is 30502223. The reversal of 30502220 is 2220503.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 30502195 and 30502204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30502223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3074 + ... + 8393.

It is an arithmetic number, because the mean of its divisors is an integer number (1605520).

Almost surely, 2^30502220 is an apocalyptic number.

It is an amenable number.

30502220 is an abundant number, since it is smaller than the sum of its proper divisors (46562740).

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

30502220 is a wasteful number, since it uses less digits than its factorization.

30502220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11502 (or 11500 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 30502220 is about 5522.8814942926. The cubic root of 30502220 is about 312.4475688036.

Adding to 30502220 its reverse (2220503), we get a palindrome (32722723).

The spelling of 30502220 in words is "thirty million, five hundred two thousand, two hundred twenty".