30225990 has 32 divisors (see below), whose sum is σ = 74232576. Its totient is φ = 7872480.

The previous prime is 30225989. The next prime is 30225997. The reversal of 30225990 is 9952203.

It is a super-2 number, since 2×30225990² = 1827220942960200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30225997) 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, 10426 + ... + 13005.

It is an arithmetic number, because the mean of its divisors is an integer number (2319768).

Almost surely, 2^30225990 is an apocalyptic number.

30225990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30225990 is an abundant number, since it is smaller than the sum of its proper divisors (44006586).

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

30225990 is a wasteful number, since it uses less digits than its factorization.

30225990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23484.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 30225990 is about 5497.8168394373. The cubic root of 30225990 is about 311.5015256880.

The spelling of 30225990 in words is "thirty million, two hundred twenty-five thousand, nine hundred ninety".