30649568 has 24 divisors (see below), whose sum is σ = 60464880. Its totient is φ = 15293440.

The previous prime is 30649559. The next prime is 30649571. The reversal of 30649568 is 86594603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29213 + ... + 30243.

It is an arithmetic number, because the mean of its divisors is an integer number (2519370).

Almost surely, 2^30649568 is an apocalyptic number.

It is an amenable number.

30649568 is a deficient number, since it is larger than the sum of its proper divisors (29815312).

30649568 is a wasteful number, since it uses less digits than its factorization.

30649568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 30649568 is about 5536.2051985092. The cubic root of 30649568 is about 312.9498774820.

The spelling of 30649568 in words is "thirty million, six hundred forty-nine thousand, five hundred sixty-eight".