30986550 has 120 divisors (see below), whose sum is σ = 98486256. Its totient is φ = 7076160.

The previous prime is 30986533. The next prime is 30986561. The reversal of 30986550 is 5568903.

It is a congruent number.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 27804 + ... + 28896.

Almost surely, 2^30986550 is an apocalyptic number.

30986550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30986550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49243128).

30986550 is an abundant number, since it is smaller than the sum of its proper divisors (67499706).

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

30986550 is a wasteful number, since it uses less digits than its factorization.

30986550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 30986550 is about 5566.5563861332. The cubic root of 30986550 is about 314.0926268716.

The spelling of 30986550 in words is "thirty million, nine hundred eighty-six thousand, five hundred fifty".