30028040 has 32 divisors (see below), whose sum is σ = 77215680. Its totient is φ = 10295232.

The previous prime is 30028027. The next prime is 30028091. The reversal of 30028040 is 4082003.

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, 53342 + ... + 53901.

It is an arithmetic number, because the mean of its divisors is an integer number (2412990).

Almost surely, 2^30028040 is an apocalyptic number.

It is an amenable number.

30028040 is an abundant number, since it is smaller than the sum of its proper divisors (47187640).

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

30028040 is a wasteful number, since it uses less digits than its factorization.

30028040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107261 (or 107257 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 30028040 is about 5479.7846673022. The cubic root of 30028040 is about 310.8200280051.

The spelling of 30028040 in words is "thirty million, twenty-eight thousand, forty".