140782280 has 32 divisors (see below), whose sum is σ = 318435840. Its totient is φ = 56015040.

The previous prime is 140782277. The next prime is 140782289. The reversal of 140782280 is 82287041.

It is not an unprimeable number, because it can be changed into a prime (140782289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1574 + ... + 16853.

It is an arithmetic number, because the mean of its divisors is an integer number (9951120).

Almost surely, 2^140782280 is an apocalyptic number.

140782280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140782280 is an abundant number, since it is smaller than the sum of its proper divisors (177653560).

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

140782280 is a wasteful number, since it uses less digits than its factorization.

140782280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18629 (or 18625 counting only the distinct ones).

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

The square root of 140782280 is about 11865.1708795112. The cubic root of 140782280 is about 520.2147535063.

The spelling of 140782280 in words is "one hundred forty million, seven hundred eighty-two thousand, two hundred eighty".