30143432 has 64 divisors (see below), whose sum is σ = 65784960. Its totient is φ = 12812800.

The previous prime is 30143423. The next prime is 30143437. The reversal of 30143432 is 23434103.

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

It is not an unprimeable number, because it can be changed into a prime (30143437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107132 + ... + 107412.

It is an arithmetic number, because the mean of its divisors is an integer number (1027890).

Almost surely, 2^30143432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30143432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32892480).

30143432 is an abundant number, since it is smaller than the sum of its proper divisors (35641528).

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

30143432 is a wasteful number, since it uses less digits than its factorization.

30143432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 30143432 is about 5490.3034524514. The cubic root of 30143432 is about 311.2176596883.

Adding to 30143432 its reverse (23434103), we get a palindrome (53577535).

It can be divided in two parts, 3014 and 3432, that added together give a palindrome (6446).

The spelling of 30143432 in words is "thirty million, one hundred forty-three thousand, four hundred thirty-two".