140808280 has 64 divisors (see below), whose sum is σ = 341871840. Its totient is φ = 51996672.

The previous prime is 140808247. The next prime is 140808289. The reversal of 140808280 is 82808041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140808289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34087 + ... + 37993.

Almost surely, 2^140808280 is an apocalyptic number.

140808280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140808280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170935920).

140808280 is an abundant number, since it is smaller than the sum of its proper divisors (201063560).

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

140808280 is a wasteful number, since it uses less digits than its factorization.

140808280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988 (or 3984 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 140808280 is about 11866.2664726526. The cubic root of 140808280 is about 520.2467763600.

The spelling of 140808280 in words is "one hundred forty million, eight hundred eight thousand, two hundred eighty".