30986445 has 32 divisors (see below), whose sum is σ = 57987072. Its totient is φ = 13833792.

The previous prime is 30986443. The next prime is 30986477. The reversal of 30986445 is 54468903.

It is not a de Polignac number, because 30986445 - 2¹ = 30986443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30986443) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1084 + ... + 7946.

It is an arithmetic number, because the mean of its divisors is an integer number (1812096).

Almost surely, 2^30986445 is an apocalyptic number.

30986445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30986445 is a deficient number, since it is larger than the sum of its proper divisors (27000627).

30986445 is a wasteful number, since it uses less digits than its factorization.

30986445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 30986445 is about 5566.5469548006. The cubic root of 30986445 is about 314.0922720966.

The spelling of 30986445 in words is "thirty million, nine hundred eighty-six thousand, four hundred forty-five".