140561856 has 84 divisors (see below), whose sum is σ = 408127200. Its totient is φ = 46245888.

The previous prime is 140561851. The next prime is 140561887. The reversal of 140561856 is 658165041.

140561856 is a `hidden beast` number, since 1 + 40 + 561 + 8 + 56 = 666.

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 140561856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140561851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43960 + ... + 47048.

Almost surely, 2^140561856 is an apocalyptic number.

140561856 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 140561856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204063600).

140561856 is an abundant number, since it is smaller than the sum of its proper divisors (267565344).

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

140561856 is a wasteful number, since it uses less digits than its factorization.

140561856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186 (or 3173 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 140561856 is about 11855.8785418880. The cubic root of 140561856 is about 519.9431101471.

The spelling of 140561856 in words is "one hundred forty million, five hundred sixty-one thousand, eight hundred fifty-six".