30143445 has 16 divisors (see below), whose sum is σ = 48556800. Its totient is φ = 15967424.

The previous prime is 30143437. The next prime is 30143447. The reversal of 30143445 is 54434103.

It is a cyclic number.

It is not a de Polignac number, because 30143445 - 2³ = 30143437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30143447) 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, 4509 + ... + 8978.

It is an arithmetic number, because the mean of its divisors is an integer number (3034800).

Almost surely, 2^30143445 is an apocalyptic number.

It is an amenable number.

30143445 is a deficient number, since it is larger than the sum of its proper divisors (18413355).

30143445 is a wasteful number, since it uses less digits than its factorization.

30143445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13644.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 30143445 is about 5490.3046363567. The cubic root of 30143445 is about 311.2177044280.

Adding to 30143445 its reverse (54434103), we get a palindrome (84577548).

The spelling of 30143445 in words is "thirty million, one hundred forty-three thousand, four hundred forty-five".