30705564 has 48 divisors (see below), whose sum is σ = 73463936. Its totient is φ = 9979200.

The previous prime is 30705559. The next prime is 30705581. The reversal of 30705564 is 46550703.

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 15 ways as a sum of consecutive naturals, for example, 145419 + ... + 145629.

Almost surely, 2^30705564 is an apocalyptic number.

It is an amenable number.

30705564 is an abundant number, since it is smaller than the sum of its proper divisors (42758372).

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

30705564 is a wasteful number, since it uses less digits than its factorization.

30705564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 30705564 is about 5541.2601454904. The cubic root of 30705564 is about 313.1403454219.

The spelling of 30705564 in words is "thirty million, seven hundred five thousand, five hundred sixty-four".