30143136 has 24 divisors (see below), whose sum is σ = 79125984. Its totient is φ = 10047680.

The previous prime is 30143119. The next prime is 30143137. The reversal of 30143136 is 63134103.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (30143137) 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 3 ways as a sum of consecutive naturals, for example, 156900 + ... + 157091.

It is an arithmetic number, because the mean of its divisors is an integer number (3296916).

Almost surely, 2^30143136 is an apocalyptic number.

It is an amenable number.

30143136 is an abundant number, since it is smaller than the sum of its proper divisors (48982848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30143136 is a wasteful number, since it uses less digits than its factorization.

30143136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314004 (or 313996 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30143136 is about 5490.2764957696. The cubic root of 30143136 is about 311.2166409950.

Adding to 30143136 its reverse (63134103), we get a palindrome (93277239).

The spelling of 30143136 in words is "thirty million, one hundred forty-three thousand, one hundred thirty-six".