30902442 has 8 divisors (see below), whose sum is σ = 61804896. Its totient is φ = 10300812.

The previous prime is 30902407. The next prime is 30902483. The reversal of 30902442 is 24420903.

It is a happy number.

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

30902442 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2575198 + ... + 2575209.

It is an arithmetic number, because the mean of its divisors is an integer number (7725612).

Almost surely, 2^30902442 is an apocalyptic number.

30902442 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.

30902442 is a wasteful number, since it uses less digits than its factorization.

30902442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5150412.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30902442 is about 5558.9964921737. The cubic root of 30902442 is about 313.8081847403.

The spelling of 30902442 in words is "thirty million, nine hundred two thousand, four hundred forty-two".