140350644 has 120 divisors (see below), whose sum is σ = 441524160. Its totient is φ = 37977984.

The previous prime is 140350643. The next prime is 140350687. The reversal of 140350644 is 446053041.

140350644 is a `hidden beast` number, since 14 + 0 + 3 + 5 + 0 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140350643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41464 + ... + 44720.

It is an arithmetic number, because the mean of its divisors is an integer number (3679368).

Almost surely, 2^140350644 is an apocalyptic number.

140350644 is a gapful number since it is divisible by the number (14) 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 140350644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220762080).

140350644 is an abundant number, since it is smaller than the sum of its proper divisors (301173516).

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

140350644 is a wasteful number, since it uses less digits than its factorization.

140350644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299 (or 3288 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 140350644 is about 11846.9677133012. The cubic root of 140350644 is about 519.6825527941.

The spelling of 140350644 in words is "one hundred forty million, three hundred fifty thousand, six hundred forty-four".