140728280 has 64 divisors (see below), whose sum is σ = 394778880. Its totient is φ = 43862400.

The previous prime is 140728267. The next prime is 140728321. The reversal of 140728280 is 82827041.

140728280 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19766 + ... + 25925.

It is an arithmetic number, because the mean of its divisors is an integer number (6168420).

Almost surely, 2^140728280 is an apocalyptic number.

140728280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140728280 is an abundant number, since it is smaller than the sum of its proper divisors (254050600).

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

140728280 is a wasteful number, since it uses less digits than its factorization.

140728280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45720 (or 45716 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 140728280 is about 11862.8950935259. The cubic root of 140728280 is about 520.1482319025.

The spelling of 140728280 in words is "one hundred forty million, seven hundred twenty-eight thousand, two hundred eighty".