30689450 has 24 divisors (see below), whose sum is σ = 62272800. Its totient is φ = 11159600.

The previous prime is 30689441. The next prime is 30689489. The reversal of 30689450 is 5498603.

It is a self number, because there is not a number n which added to its sum of digits gives 30689450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27350 + ... + 28449.

It is an arithmetic number, because the mean of its divisors is an integer number (2594700).

Almost surely, 2^30689450 is an apocalyptic number.

30689450 is an abundant number, since it is smaller than the sum of its proper divisors (31583350).

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

30689450 is a wasteful number, since it uses less digits than its factorization.

30689450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55822 (or 55817 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 30689450 is about 5539.8059532803. The cubic root of 30689450 is about 313.0855581041.

The spelling of 30689450 in words is "thirty million, six hundred eighty-nine thousand, four hundred fifty".