140038280 has 16 divisors (see below), whose sum is σ = 315086220. Its totient is φ = 56015296.

The previous prime is 140038279. The next prime is 140038289. The reversal of 140038280 is 82830041.

140038280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 133494916 + 6543364 = 11554^2 + 2558^2 .

It is a super-2 number, since 2×140038280² = 39221439730716800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140038289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750439 + ... + 1750518.

Almost surely, 2^140038280 is an apocalyptic number.

140038280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140038280 is an abundant number, since it is smaller than the sum of its proper divisors (175047940).

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

140038280 is a wasteful number, since it uses less digits than its factorization.

140038280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500968 (or 3500964 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 140038280 is about 11833.7770808817. Note that the first 3 decimals coincide. The cubic root of 140038280 is about 519.2967317472.

The spelling of 140038280 in words is "one hundred forty million, thirty-eight thousand, two hundred eighty".