30440828 has 12 divisors (see below), whose sum is σ = 58114392. Its totient is φ = 13836720.

The previous prime is 30440803. The next prime is 30440843. The reversal of 30440828 is 82804403.

It is a self number, because there is not a number n which added to its sum of digits gives 30440828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345875 + ... + 345962.

It is an arithmetic number, because the mean of its divisors is an integer number (4842866).

Almost surely, 2^30440828 is an apocalyptic number.

It is an amenable number.

30440828 is a deficient number, since it is larger than the sum of its proper divisors (27673564).

30440828 is a wasteful number, since it uses less digits than its factorization.

30440828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691852 (or 691850 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 30440828 is about 5517.3207265846. The cubic root of 30440828 is about 312.2378063158.

The spelling of 30440828 in words is "thirty million, four hundred forty thousand, eight hundred twenty-eight".