140068280 has 32 divisors (see below), whose sum is σ = 343805040. Its totient is φ = 50933760.

The previous prime is 140068249. The next prime is 140068283. The reversal of 140068280 is 82860041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140068283) 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, 158729 + ... + 159608.

Almost surely, 2^140068280 is an apocalyptic number.

140068280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140068280 is an abundant number, since it is smaller than the sum of its proper divisors (203736760).

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

140068280 is a wasteful number, since it uses less digits than its factorization.

140068280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318359 (or 318355 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 140068280 is about 11835.0445711032. The cubic root of 140068280 is about 519.3338115837. Note that the first 3 decimals are identical.

The spelling of 140068280 in words is "one hundred forty million, sixty-eight thousand, two hundred eighty".