140220824 has 16 divisors (see below), whose sum is σ = 270020400. Its totient is φ = 68215392.

The previous prime is 140220803. The next prime is 140220833. The reversal of 140220824 is 428022041.

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 140220824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236564 + ... + 237155.

It is an arithmetic number, because the mean of its divisors is an integer number (16876275).

Almost surely, 2^140220824 is an apocalyptic number.

It is an amenable number.

140220824 is a deficient number, since it is larger than the sum of its proper divisors (129799576).

140220824 is a wasteful number, since it uses less digits than its factorization.

140220824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473762 (or 473758 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 140220824 is about 11841.4874065719. The cubic root of 140220824 is about 519.5222732759.

Adding to 140220824 its reverse (428022041), we get a palindrome (568242865).

The spelling of 140220824 in words is "one hundred forty million, two hundred twenty thousand, eight hundred twenty-four".