140283936 has 144 divisors (see below), whose sum is σ = 435478680. Its totient is φ = 42577920.

The previous prime is 140283929. The next prime is 140283971. The reversal of 140283936 is 639382041.

It can be written as a sum of positive squares in 4 ways, for example, as 27499536 + 112784400 = 5244^2 + 10620^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 140283936.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333006 + ... + 333426.

Almost surely, 2^140283936 is an apocalyptic number.

140283936 is a gapful number since it is divisible by the number (16) 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 140283936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217739340).

140283936 is an abundant number, since it is smaller than the sum of its proper divisors (295194744).

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

140283936 is a wasteful number, since it uses less digits than its factorization.

140283936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 140283936 is about 11844.1519747089. The cubic root of 140283936 is about 519.6002055231.

The spelling of 140283936 in words is "one hundred forty million, two hundred eighty-three thousand, nine hundred thirty-six".