140260320 has 144 divisors (see below), whose sum is σ = 481768560. Its totient is φ = 37158912.

The previous prime is 140260291. The next prime is 140260321. The reversal of 140260320 is 23062041.

It is a happy number.

140260320 is a `hidden beast` number, since 1 + 40 + 2 + 603 + 20 = 666.

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 (18).

It is a junction number, because it is equal to n+sod(n) for n = 140260293 and 140260302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140260321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369891 + ... + 370269.

It is an arithmetic number, because the mean of its divisors is an integer number (3345615).

Almost surely, 2^140260320 is an apocalyptic number.

140260320 is a gapful number since it is divisible by the number (10) 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 140260320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240884280).

140260320 is an abundant number, since it is smaller than the sum of its proper divisors (341508240).

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

140260320 is a wasteful number, since it uses less digits than its factorization.

140260320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140260320 is about 11843.1549850536. The cubic root of 140260320 is about 519.5710466437.

The spelling of 140260320 in words is "one hundred forty million, two hundred sixty thousand, three hundred twenty".