30689284 has 12 divisors (see below), whose sum is σ = 56865564. Its totient is φ = 14441984.

The previous prime is 30689249. The next prime is 30689293. The reversal of 30689284 is 48298603.

It can be written as a sum of positive squares in 2 ways, for example, as 9437184 + 21252100 = 3072^2 + 4610^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225589 + ... + 225724.

It is an arithmetic number, because the mean of its divisors is an integer number (4738797).

Almost surely, 2^30689284 is an apocalyptic number.

30689284 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30689284 is a deficient number, since it is larger than the sum of its proper divisors (26176280).

30689284 is a wasteful number, since it uses less digits than its factorization.

30689284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451334 (or 451332 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 30689284 is about 5539.7909707858. The cubic root of 30689284 is about 313.0849936073.

The spelling of 30689284 in words is "thirty million, six hundred eighty-nine thousand, two hundred eighty-four".