30499220 has 24 divisors (see below), whose sum is σ = 64297800. Its totient is φ = 12152192.

The previous prime is 30499141. The next prime is 30499229. The reversal of 30499220 is 2299403.

It can be written as a sum of positive squares in 4 ways, for example, as 183184 + 30316036 = 428^2 + 5506^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30499229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2546 + ... + 8214.

It is an arithmetic number, because the mean of its divisors is an integer number (2679075).

Almost surely, 2^30499220 is an apocalyptic number.

It is an amenable number.

30499220 is an abundant number, since it is smaller than the sum of its proper divisors (33798580).

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

30499220 is a wasteful number, since it uses less digits than its factorization.

30499220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947 (or 5945 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 30499220 is about 5522.6098902602. The cubic root of 30499220 is about 312.4373250308.

The spelling of 30499220 in words is "thirty million, four hundred ninety-nine thousand, two hundred twenty".