30490208 has 48 divisors (see below), whose sum is σ = 69511680. Its totient is φ = 12894336.

The previous prime is 30490199. The next prime is 30490237. The reversal of 30490208 is 80209403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16835 + ... + 18557.

It is an arithmetic number, because the mean of its divisors is an integer number (1448160).

Almost surely, 2^30490208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30490208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34755840).

30490208 is an abundant number, since it is smaller than the sum of its proper divisors (39021472).

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

30490208 is a wasteful number, since it uses less digits than its factorization.

30490208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1811 counting only the distinct ones).

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

The square root of 30490208 is about 5521.7939114023. The cubic root of 30490208 is about 312.4065486967.

The spelling of 30490208 in words is "thirty million, four hundred ninety thousand, two hundred eight".