30674521 has 4 divisors (see below), whose sum is σ = 31177444. Its totient is φ = 30171600.

The previous prime is 30674509. The next prime is 30674549. The reversal of 30674521 is 12547603.

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

It can be written as a sum of positive squares in 2 ways, for example, as 698896 + 29975625 = 836^2 + 5475^2 .

It is a cyclic number.

It is not a de Polignac number, because 30674521 - 2¹⁷ = 30543449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30674521.

It is not an unprimeable number, because it can be changed into a prime (30674561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251370 + ... + 251491.

It is an arithmetic number, because the mean of its divisors is an integer number (7794361).

Almost surely, 2^30674521 is an apocalyptic number.

It is an amenable number.

30674521 is a deficient number, since it is larger than the sum of its proper divisors (502923).

30674521 is an equidigital number, since it uses as much as digits as its factorization.

30674521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502922.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 30674521 is about 5538.4583595076. The cubic root of 30674521 is about 313.0347826487.

The spelling of 30674521 in words is "thirty million, six hundred seventy-four thousand, five hundred twenty-one".