30505888 has 48 divisors (see below), whose sum is σ = 72684864. Its totient is φ = 12303360.

The previous prime is 30505879. The next prime is 30505901. The reversal of 30505888 is 88850503.

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 7 ways as a sum of consecutive naturals, for example, 198 + ... + 7813.

It is an arithmetic number, because the mean of its divisors is an integer number (1514268).

Almost surely, 2^30505888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30505888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36342432).

30505888 is an abundant number, since it is smaller than the sum of its proper divisors (42178976).

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

30505888 is a wasteful number, since it uses less digits than its factorization.

30505888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045 (or 8037 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 30505888 is about 5523.2135573414. The cubic root of 30505888 is about 312.4600926106.

The spelling of 30505888 in words is "thirty million, five hundred five thousand, eight hundred eighty-eight".