30691304 has 16 divisors (see below), whose sum is σ = 65767200. Its totient is φ = 13153392.

The previous prime is 30691303. The next prime is 30691319. The reversal of 30691304 is 40319603.

It is a super-2 number, since 2×30691304² = 1883912282440832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30691301) 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, 273974 + ... + 274085.

It is an arithmetic number, because the mean of its divisors is an integer number (4110450).

Almost surely, 2^30691304 is an apocalyptic number.

It is an amenable number.

30691304 is an abundant number, since it is smaller than the sum of its proper divisors (35075896).

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

30691304 is a wasteful number, since it uses less digits than its factorization.

30691304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548072 (or 548068 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 30691304 is about 5539.9732851341. The cubic root of 30691304 is about 313.0918626479.

The spelling of 30691304 in words is "thirty million, six hundred ninety-one thousand, three hundred four".