30520874 has 4 divisors (see below), whose sum is σ = 45781314. Its totient is φ = 15260436.

The previous prime is 30520873. The next prime is 30520883. The reversal of 30520874 is 47802503.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26884225 + 3636649 = 5185^2 + 1907^2 .

It is not an unprimeable number, because it can be changed into a prime (30520873) by changing a digit.

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 as a sum of consecutive naturals, namely, 7630217 + ... + 7630220.

Almost surely, 2^30520874 is an apocalyptic number.

30520874 is a deficient number, since it is larger than the sum of its proper divisors (15260440).

30520874 is a wasteful number, since it uses less digits than its factorization.

30520874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15260439.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 30520874 is about 5524.5700285181. The cubic root of 30520874 is about 312.5112495150.

The spelling of 30520874 in words is "thirty million, five hundred twenty thousand, eight hundred seventy-four".