140280500 has 24 divisors (see below), whose sum is σ = 306373704. Its totient is φ = 56112000.

The previous prime is 140280499. The next prime is 140280509. The reversal of 140280500 is 5082041.

It can be written as a sum of positive squares in 4 ways, for example, as 43533604 + 96746896 = 6598^2 + 9836^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140280509) by changing a digit.

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, 139781 + ... + 140780.

It is an arithmetic number, because the mean of its divisors is an integer number (12765571).

Almost surely, 2^140280500 is an apocalyptic number.

140280500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140280500 is an abundant number, since it is smaller than the sum of its proper divisors (166093204).

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

140280500 is a wasteful number, since it uses less digits than its factorization.

140280500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280580 (or 280568 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 140280500 is about 11844.0069233347. The cubic root of 140280500 is about 519.5959632676.

The spelling of 140280500 in words is "one hundred forty million, two hundred eighty thousand, five hundred".