30742288 has 10 divisors (see below), whose sum is σ = 59563214. Its totient is φ = 15371136.

The previous prime is 30742259. The next prime is 30742303. The reversal of 30742288 is 88224703.

It can be written as a sum of positive squares in only one way, i.e., 21790224 + 8952064 = 4668^2 + 2992^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960681 + ... + 960712.

Almost surely, 2^30742288 is an apocalyptic number.

It is an amenable number.

30742288 is a deficient number, since it is larger than the sum of its proper divisors (28820926).

30742288 is a wasteful number, since it uses less digits than its factorization.

30742288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921401 (or 1921395 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 30742288 is about 5544.5728419780. The cubic root of 30742288 is about 313.2651347977.

The spelling of 30742288 in words is "thirty million, seven hundred forty-two thousand, two hundred eighty-eight".