140028020 has 48 divisors (see below), whose sum is σ = 321668928. Its totient is φ = 50780160.

The previous prime is 140028019. The next prime is 140028047. The reversal of 140028020 is 20820041.

It is a self number, because there is not a number n which added to its sum of digits gives 140028020.

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 15 ways as a sum of consecutive naturals, for example, 114452 + ... + 115668.

It is an arithmetic number, because the mean of its divisors is an integer number (6701436).

Almost surely, 2^140028020 is an apocalyptic number.

140028020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140028020 is an abundant number, since it is smaller than the sum of its proper divisors (181640908).

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

140028020 is a wasteful number, since it uses less digits than its factorization.

140028020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 140028020 is about 11833.3435680707. The cubic root of 140028020 is about 519.2840492278.

Adding to 140028020 its reverse (20820041), we get a palindrome (160848061).

It can be divided in two parts, 14002 and 8020, that added together give a palindrome (22022).

The spelling of 140028020 in words is "one hundred forty million, twenty-eight thousand, twenty".