30705230 has 32 divisors (see below), whose sum is σ = 61072704. Its totient is φ = 11055616.

The previous prime is 30705223. The next prime is 30705263. The reversal of 30705230 is 3250703.

It is a super-2 number, since 2×30705230² = 1885622298705800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17 + ... + 7836.

It is an arithmetic number, because the mean of its divisors is an integer number (1908522).

Almost surely, 2^30705230 is an apocalyptic number.

30705230 is a deficient number, since it is larger than the sum of its proper divisors (30367474).

30705230 is a wasteful number, since it uses less digits than its factorization.

30705230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900.

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 30705230 is about 5541.2300078593. The cubic root of 30705230 is about 313.1392100223.

Adding to 30705230 its reverse (3250703), we get a palindrome (33955933).

The spelling of 30705230 in words is "thirty million, seven hundred five thousand, two hundred thirty".