140247816 has 64 divisors (see below), whose sum is σ = 370430400. Its totient is φ = 44126208.

The previous prime is 140247763. The next prime is 140247823. The reversal of 140247816 is 618742041.

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, 208056 + ... + 208728.

It is an arithmetic number, because the mean of its divisors is an integer number (5787975).

Almost surely, 2^140247816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140247816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185215200).

140247816 is an abundant number, since it is smaller than the sum of its proper divisors (230182584).

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

140247816 is a wasteful number, since it uses less digits than its factorization.

140247816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 140247816 is about 11842.6270734158. The cubic root of 140247816 is about 519.5556065216. Note that the first 3 decimals are identical.

Adding to 140247816 its reverse (618742041), we get a palindrome (758989857).

The spelling of 140247816 in words is "one hundred forty million, two hundred forty-seven thousand, eight hundred sixteen".