30705056 has 12 divisors (see below), whose sum is σ = 60450642. Its totient is φ = 15352512.

The previous prime is 30705049. The next prime is 30705061. The reversal of 30705056 is 65050703.

It can be written as a sum of positive squares in only one way, i.e., 30691600 + 13456 = 5540^2 + 116^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479735 + ... + 479798.

Almost surely, 2^30705056 is an apocalyptic number.

It is an amenable number.

30705056 is a deficient number, since it is larger than the sum of its proper divisors (29745586).

30705056 is an equidigital number, since it uses as much as digits as its factorization.

30705056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959543 (or 959535 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 30705056 is about 5541.2143073518. The cubic root of 30705056 is about 313.1386185234.

Adding to 30705056 its reverse (65050703), we get a palindrome (95755759).

The spelling of 30705056 in words is "thirty million, seven hundred five thousand, fifty-six".