143280428 has 12 divisors (see below), whose sum is σ = 257517792. Its totient is φ = 69703920.

The previous prime is 143280421. The next prime is 143280451. The reversal of 143280428 is 824082341.

It is a junction number, because it is equal to n+sod(n) for n = 143280394 and 143280403.

It is not an unprimeable number, because it can be changed into a prime (143280421) 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, 483908 + ... + 484203.

It is an arithmetic number, because the mean of its divisors is an integer number (21459816).

Almost surely, 2^143280428 is an apocalyptic number.

It is an amenable number.

143280428 is a deficient number, since it is larger than the sum of its proper divisors (114237364).

143280428 is a wasteful number, since it uses less digits than its factorization.

143280428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968152 (or 968150 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 143280428 is about 11969.9802840272. The cubic root of 143280428 is about 523.2737593845.

The spelling of 143280428 in words is "one hundred forty-three million, two hundred eighty thousand, four hundred twenty-eight".