143373728 has 12 divisors (see below), whose sum is σ = 282267090. Its totient is φ = 71686848.

The previous prime is 143373707. The next prime is 143373731. The reversal of 143373728 is 827373341.

It can be written as a sum of positive squares in only one way, i.e., 143328784 + 44944 = 11972^2 + 212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143373691 and 143373700.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2240183 + ... + 2240246.

Almost surely, 2^143373728 is an apocalyptic number.

It is an amenable number.

143373728 is a deficient number, since it is larger than the sum of its proper divisors (138893362).

143373728 is an equidigital number, since it uses as much as digits as its factorization.

143373728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4480439 (or 4480431 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 143373728 is about 11973.8768993171. The cubic root of 143373728 is about 523.3873148999.

The spelling of 143373728 in words is "one hundred forty-three million, three hundred seventy-three thousand, seven hundred twenty-eight".