30490842 has 8 divisors (see below), whose sum is σ = 60981696. Its totient is φ = 10163612.

The previous prime is 30490841. The next prime is 30490871. The reversal of 30490842 is 24809403.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

30490842 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (30490841) 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 3 ways as a sum of consecutive naturals, for example, 2540898 + ... + 2540909.

It is an arithmetic number, because the mean of its divisors is an integer number (7622712).

Almost surely, 2^30490842 is an apocalyptic number.

30490842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30490842 is a wasteful number, since it uses less digits than its factorization.

30490842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081812.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 30490842 is about 5521.8513199832. The cubic root of 30490842 is about 312.4087140299.

The spelling of 30490842 in words is "thirty million, four hundred ninety thousand, eight hundred forty-two".