140015028 has 24 divisors (see below), whose sum is σ = 343897120. Its totient is φ = 44215200.

The previous prime is 140015011. The next prime is 140015039. The reversal of 140015028 is 820510041.

It is a junction number, because it is equal to n+sod(n) for n = 140014995 and 140015013.

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 7 ways as a sum of consecutive naturals, for example, 306823 + ... + 307278.

Almost surely, 2^140015028 is an apocalyptic number.

It is an amenable number.

140015028 is an abundant number, since it is smaller than the sum of its proper divisors (203882092).

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

140015028 is a wasteful number, since it uses less digits than its factorization.

140015028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614127 (or 614125 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 140015028 is about 11832.7945980652. The cubic root of 140015028 is about 519.2679887588.

Adding to 140015028 its reverse (820510041), we get a palindrome (960525069).

The spelling of 140015028 in words is "one hundred forty million, fifteen thousand, twenty-eight".