30208490 has 32 divisors (see below), whose sum is σ = 62007120. Its totient is φ = 10497024.

The previous prime is 30208487. The next prime is 30208501. The reversal of 30208490 is 9480203.

It can be written as a sum of positive squares in 8 ways, for example, as 15547249 + 14661241 = 3943^2 + 3829^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4625 + ... + 9044.

Almost surely, 2^30208490 is an apocalyptic number.

30208490 is an abundant number, since it is smaller than the sum of its proper divisors (31798630).

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

30208490 is a wasteful number, since it uses less digits than its factorization.

30208490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13706.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 30208490 is about 5496.2250681718. The cubic root of 30208490 is about 311.4413972016.

Adding to 30208490 its reverse (9480203), we get a palindrome (39688693).

The spelling of 30208490 in words is "thirty million, two hundred eight thousand, four hundred ninety".