30240388 has 24 divisors (see below), whose sum is σ = 55298880. Its totient is φ = 14451360.

The previous prime is 30240349. The next prime is 30240389. The reversal of 30240388 is 88304203.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30240389) by changing a digit.

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, 10683 + ... + 13213.

It is an arithmetic number, because the mean of its divisors is an integer number (2304120).

Almost surely, 2^30240388 is an apocalyptic number.

It is an amenable number.

30240388 is a deficient number, since it is larger than the sum of its proper divisors (25058492).

30240388 is a wasteful number, since it uses less digits than its factorization.

30240388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2665 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 30240388 is about 5499.1261123928. The cubic root of 30240388 is about 311.5509785708.

It can be divided in two parts, 30240 and 388, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 30240388 in words is "thirty million, two hundred forty thousand, three hundred eighty-eight".