140256936 has 192 divisors, whose sum is σ = 437486400. Its totient is φ = 40310784.

The previous prime is 140256931. The next prime is 140256937. The reversal of 140256936 is 639652041.

It is a happy number.

It is a super-2 number, since 2×140256936² = 39344016192216192, which contains 22 as substring.

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 140256936.

It is not an unprimeable number, because it can be changed into a prime (140256931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 860391 + ... + 860553.

It is an arithmetic number, because the mean of its divisors is an integer number (2278575).

Almost surely, 2^140256936 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 140256936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218743200).

140256936 is an abundant number, since it is smaller than the sum of its proper divisors (297229464).

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

140256936 is a wasteful number, since it uses less digits than its factorization.

140256936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 140256936 is about 11843.0121168561. The cubic root of 140256936 is about 519.5668681216.

The spelling of 140256936 in words is "one hundred forty million, two hundred fifty-six thousand, nine hundred thirty-six".