30503130 has 32 divisors (see below), whose sum is σ = 83666304. Its totient is φ = 6972096.

The previous prime is 30503119. The next prime is 30503149. The reversal of 30503130 is 3130503.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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, 72417 + ... + 72836.

It is an arithmetic number, because the mean of its divisors is an integer number (2614572).

Almost surely, 2^30503130 is an apocalyptic number.

30503130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30503130 is an abundant number, since it is smaller than the sum of its proper divisors (53163174).

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

30503130 is a wasteful number, since it uses less digits than its factorization.

30503130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145270.

The product of its (nonzero) digits is 135, while the sum is 15.

The square root of 30503130 is about 5522.9638782089. The cubic root of 30503130 is about 312.4506759486.

Adding to 30503130 its reverse (3130503), we get a palindrome (33633633).

The spelling of 30503130 in words is "thirty million, five hundred three thousand, one hundred thirty".