30450120 has 32 divisors (see below), whose sum is σ = 91350720. Its totient is φ = 8120000.

The previous prime is 30450089. The next prime is 30450139. The reversal of 30450120 is 2105403.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30450120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126756 + ... + 126995.

It is an arithmetic number, because the mean of its divisors is an integer number (2854710).

Almost surely, 2^30450120 is an apocalyptic number.

30450120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30450120 is an abundant number, since it is smaller than the sum of its proper divisors (60900600).

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

30450120 is a wasteful number, since it uses less digits than its factorization.

30450120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253765 (or 253761 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30450120 is about 5518.1627377235. The cubic root of 30450120 is about 312.2695730661.

Adding to 30450120 its reverse (2105403), we get a palindrome (32555523).

The spelling of 30450120 in words is "thirty million, four hundred fifty thousand, one hundred twenty".