30390970 has 16 divisors (see below), whose sum is σ = 54767520. Its totient is φ = 12142224.

The previous prime is 30390967. The next prime is 30390977. The reversal of 30390970 is 7909303.

It is a super-2 number, since 2×30390970² = 1847222115081800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30390977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13549 + ... + 15631.

It is an arithmetic number, because the mean of its divisors is an integer number (3422970).

Almost surely, 2^30390970 is an apocalyptic number.

30390970 is a deficient number, since it is larger than the sum of its proper divisors (24376550).

30390970 is a wasteful number, since it uses less digits than its factorization.

30390970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 30390970 is about 5512.8005586997. The cubic root of 30390970 is about 312.0672452580.

The spelling of 30390970 in words is "thirty million, three hundred ninety thousand, nine hundred seventy".