30290490 has 64 divisors (see below), whose sum is σ = 82684800. Its totient is φ = 7886592.

The previous prime is 30290479. The next prime is 30290497. The reversal of 30290490 is 9409203.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30290497) 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 31 ways as a sum of consecutive naturals, for example, 10306 + ... + 12914.

It is an arithmetic number, because the mean of its divisors is an integer number (1291950).

Almost surely, 2^30290490 is an apocalyptic number.

30290490 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 30290490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41342400).

30290490 is an abundant number, since it is smaller than the sum of its proper divisors (52394310).

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

30290490 is a wasteful number, since it uses less digits than its factorization.

30290490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2662 counting only the distinct ones).

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

The square root of 30290490 is about 5503.6796781790. The cubic root of 30290490 is about 311.7229419132.

Adding to 30290490 its reverse (9409203), we get a palindrome (39699693).

The spelling of 30290490 in words is "thirty million, two hundred ninety thousand, four hundred ninety".