30225240 has 96 divisors (see below), whose sum is σ = 99234720. Its totient is φ = 7977984.

The previous prime is 30225233. The next prime is 30225271. The reversal of 30225240 is 4252203.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 40309 + ... + 41051.

It is an arithmetic number, because the mean of its divisors is an integer number (1033695).

Almost surely, 2^30225240 is an apocalyptic number.

30225240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30225240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49617360).

30225240 is an abundant number, since it is smaller than the sum of its proper divisors (69009480).

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

30225240 is a wasteful number, since it uses less digits than its factorization.

30225240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 30225240 is about 5497.7486301212. The cubic root of 30225240 is about 311.4989492290.

Adding to 30225240 its reverse (4252203), we get a palindrome (34477443).

The spelling of 30225240 in words is "thirty million, two hundred twenty-five thousand, two hundred forty".