143540028 has 36 divisors (see below), whose sum is σ = 364200928. Its totient is φ = 47666880.

The previous prime is 143540011. The next prime is 143540071. The reversal of 143540028 is 820045341.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×143540028³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143539983 and 143540010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2400 + ... + 17112.

Almost surely, 2^143540028 is an apocalyptic number.

143540028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

143540028 is an abundant number, since it is smaller than the sum of its proper divisors (220660900).

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

143540028 is a wasteful number, since it uses less digits than its factorization.

143540028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14994 (or 14989 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 143540028 is about 11980.8191706577. The cubic root of 143540028 is about 523.5895966821.

Adding to 143540028 its reverse (820045341), we get a palindrome (963585369).

The spelling of 143540028 in words is "one hundred forty-three million, five hundred forty thousand, twenty-eight".