30985590 has 16 divisors (see below), whose sum is σ = 74365488. Its totient is φ = 8262816.

The previous prime is 30985579. The next prime is 30985609. The reversal of 30985590 is 9558903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516397 + ... + 516456.

It is an arithmetic number, because the mean of its divisors is an integer number (4647843).

Almost surely, 2^30985590 is an apocalyptic number.

30985590 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30985590 is an abundant number, since it is smaller than the sum of its proper divisors (43379898).

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

30985590 is a wasteful number, since it uses less digits than its factorization.

30985590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032863.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 30985590 is about 5566.4701562121. The cubic root of 30985590 is about 314.0893831843.

The spelling of 30985590 in words is "thirty million, nine hundred eighty-five thousand, five hundred ninety".