140028165 has 36 divisors (see below), whose sum is σ = 249562404. Its totient is φ = 72631296.

The previous prime is 140028149. The next prime is 140028169. The reversal of 140028165 is 561820041.

It can be written as a sum of positive squares in 6 ways, for example, as 45724644 + 94303521 = 6762^2 + 9711^2 .

It is not a de Polignac number, because 140028165 - 2⁴ = 140028149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140028169) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60469 + ... + 62741.

It is an arithmetic number, because the mean of its divisors is an integer number (6932289).

Almost surely, 2^140028165 is an apocalyptic number.

140028165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140028165 is a deficient number, since it is larger than the sum of its proper divisors (109534239).

140028165 is a wasteful number, since it uses less digits than its factorization.

140028165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 140028165 is about 11833.3496948244. The cubic root of 140028165 is about 519.2842284685.

The spelling of 140028165 in words is "one hundred forty million, twenty-eight thousand, one hundred sixty-five".