30028072 has 32 divisors (see below), whose sum is σ = 58423680. Its totient is φ = 14458240.

The previous prime is 30028027. The next prime is 30028091. The reversal of 30028072 is 27082003.

It is a happy 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, 26673 + ... + 27775.

It is an arithmetic number, because the mean of its divisors is an integer number (1825740).

Almost surely, 2^30028072 is an apocalyptic number.

It is an amenable number.

30028072 is a deficient number, since it is larger than the sum of its proper divisors (28395608).

30028072 is a wasteful number, since it uses less digits than its factorization.

30028072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 30028072 is about 5479.7875871242. The cubic root of 30028072 is about 310.8201384156.

The spelling of 30028072 in words is "thirty million, twenty-eight thousand, seventy-two".