140284544 has 64 divisors (see below), whose sum is σ = 308888640. Its totient is φ = 63123456.

The previous prime is 140284541. The next prime is 140284553. The reversal of 140284544 is 445482041.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 140284544.

It is not an unprimeable number, because it can be changed into a prime (140284541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48647 + ... + 51449.

It is an arithmetic number, because the mean of its divisors is an integer number (4826385).

Almost surely, 2^140284544 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 140284544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154444320).

140284544 is an abundant number, since it is smaller than the sum of its proper divisors (168604096).

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

140284544 is a wasteful number, since it uses less digits than its factorization.

140284544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

The square root of 140284544 is about 11844.1776413561. The cubic root of 140284544 is about 519.6009561827.

The spelling of 140284544 in words is "one hundred forty million, two hundred eighty-four thousand, five hundred forty-four".