30689290 has 8 divisors (see below), whose sum is σ = 55240740. Its totient is φ = 12275712.

The previous prime is 30689249. The next prime is 30689293. The reversal of 30689290 is 9298603.

It can be written as a sum of positive squares in 2 ways, for example, as 30503529 + 185761 = 5523^2 + 431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30689293) 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, 1534455 + ... + 1534474.

Almost surely, 2^30689290 is an apocalyptic number.

30689290 is a deficient number, since it is larger than the sum of its proper divisors (24551450).

30689290 is a wasteful number, since it uses less digits than its factorization.

30689290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068936.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 30689290 is about 5539.7915123225. The cubic root of 30689290 is about 313.0850140108.

The spelling of 30689290 in words is "thirty million, six hundred eighty-nine thousand, two hundred ninety".