30204990 has 48 divisors (see below), whose sum is σ = 79279200. Its totient is φ = 7978176.

The previous prime is 30204961. The next prime is 30205001. The reversal of 30204990 is 9940203.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8271 + ... + 11349.

It is an arithmetic number, because the mean of its divisors is an integer number (1651650).

Almost surely, 2^30204990 is an apocalyptic number.

30204990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30204990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39639600).

30204990 is an abundant number, since it is smaller than the sum of its proper divisors (49074210).

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

30204990 is a wasteful number, since it uses less digits than its factorization.

30204990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201 (or 3198 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30204990 is about 5495.9066585960. The cubic root of 30204990 is about 311.4293687179.

The spelling of 30204990 in words is "thirty million, two hundred four thousand, nine hundred ninety".