30350520 has 48 divisors (see below), whose sum is σ = 98640360. Its totient is φ = 8093376.

The previous prime is 30350483. The next prime is 30350521. The reversal of 30350520 is 2505303.

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 = 30350493 and 30350502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30350521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41794 + ... + 42513.

Almost surely, 2^30350520 is an apocalyptic number.

30350520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30350520 is an abundant number, since it is smaller than the sum of its proper divisors (68289840).

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

30350520 is a wasteful number, since it uses less digits than its factorization.

30350520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84324 (or 84317 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 30350520 is about 5509.1306029173. The cubic root of 30350520 is about 311.9287312562.

Adding to 30350520 its reverse (2505303), we get a palindrome (32855823).

The spelling of 30350520 in words is "thirty million, three hundred fifty thousand, five hundred twenty".