30275550 has 72 divisors (see below), whose sum is σ = 85645560. Its totient is φ = 7646400.

The previous prime is 30275549. The next prime is 30275563. The reversal of 30275550 is 5557203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6780 + ... + 10320.

Almost surely, 2^30275550 is an apocalyptic number.

30275550 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 30275550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42822780).

30275550 is an abundant number, since it is smaller than the sum of its proper divisors (55370010).

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

30275550 is a wasteful number, since it uses less digits than its factorization.

30275550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3578 (or 3570 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 30275550 is about 5502.3222370196. The cubic root of 30275550 is about 311.6716837281.

The spelling of 30275550 in words is "thirty million, two hundred seventy-five thousand, five hundred fifty".