30143072 has 12 divisors (see below), whose sum is σ = 59344236. Its totient is φ = 15071520.

The previous prime is 30143051. The next prime is 30143081. The reversal of 30143072 is 27034103.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 470954 + ... + 471017.

It is an arithmetic number, because the mean of its divisors is an integer number (4945353).

Almost surely, 2^30143072 is an apocalyptic number.

30143072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30143072 is a deficient number, since it is larger than the sum of its proper divisors (29201164).

30143072 is an equidigital number, since it uses as much as digits as its factorization.

30143072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941981 (or 941973 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 30143072 is about 5490.2706672804. The cubic root of 30143072 is about 311.2164207362.

Adding to 30143072 its reverse (27034103), we get a palindrome (57177175).

The spelling of 30143072 in words is "thirty million, one hundred forty-three thousand, seventy-two".