30028734 has 24 divisors (see below), whose sum is σ = 65362752. Its totient is φ = 9963360.

The previous prime is 30028729. The next prime is 30028763. The reversal of 30028734 is 43782003.

It is a junction number, because it is equal to n+sod(n) for n = 30028698 and 30028707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274 + ... + 7754.

It is an arithmetic number, because the mean of its divisors is an integer number (2723448).

Almost surely, 2^30028734 is an apocalyptic number.

30028734 is an abundant number, since it is smaller than the sum of its proper divisors (35334018).

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

30028734 is a wasteful number, since it uses less digits than its factorization.

30028734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7712 (or 7709 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 30028734 is about 5479.8479905924. The cubic root of 30028734 is about 310.8224225163.

The spelling of 30028734 in words is "thirty million, twenty-eight thousand, seven hundred thirty-four".