30143146 has 8 divisors (see below), whose sum is σ = 49325184. Its totient is φ = 13701420.

The previous prime is 30143137. The next prime is 30143149. The reversal of 30143146 is 64134103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1370143 = 30143146 / (3 + 0 + 1 + 4 + 3 + 1 + 4 + 6).

It is not an unprimeable number, because it can be changed into a prime (30143149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685050 + ... + 685093.

It is an arithmetic number, because the mean of its divisors is an integer number (6165648).

Almost surely, 2^30143146 is an apocalyptic number.

30143146 is a deficient number, since it is larger than the sum of its proper divisors (19182038).

30143146 is a wasteful number, since it uses less digits than its factorization.

30143146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370156.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30143146 is about 5490.2774064705. The cubic root of 30143146 is about 311.2166754105.

Adding to 30143146 its reverse (64134103), we get a palindrome (94277249).

The spelling of 30143146 in words is "thirty million, one hundred forty-three thousand, one hundred forty-six".