30145750 has 32 divisors (see below), whose sum is σ = 57975840. Its totient is φ = 11728800.

The previous prime is 30145729. The next prime is 30145751. The reversal of 30145750 is 5754103.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7621 + ... + 10879.

It is an arithmetic number, because the mean of its divisors is an integer number (1811745).

Almost surely, 2^30145750 is an apocalyptic number.

30145750 is a deficient number, since it is larger than the sum of its proper divisors (27830090).

30145750 is a wasteful number, since it uses less digits than its factorization.

30145750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313 (or 3303 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 30145750 is about 5490.5145478361. The cubic root of 30145750 is about 311.2256369268.

Adding to 30145750 its reverse (5754103), we get a palindrome (35899853).

The spelling of 30145750 in words is "thirty million, one hundred forty-five thousand, seven hundred fifty".