140543228 has 24 divisors (see below), whose sum is σ = 295881600. Its totient is φ = 57062448.

The previous prime is 140543213. The next prime is 140543237. The reversal of 140543228 is 822345041.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 140543228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131558 + ... + 132621.

It is an arithmetic number, because the mean of its divisors is an integer number (12328400).

Almost surely, 2^140543228 is an apocalyptic number.

It is an amenable number.

140543228 is an abundant number, since it is smaller than the sum of its proper divisors (155338372).

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

140543228 is a wasteful number, since it uses less digits than its factorization.

140543228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264209 (or 264207 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 140543228 is about 11855.0929140180. The cubic root of 140543228 is about 519.9201405961.

Adding to 140543228 its reverse (822345041), we get a palindrome (962888269).

The spelling of 140543228 in words is "one hundred forty million, five hundred forty-three thousand, two hundred twenty-eight".