140263530 has 64 divisors (see below), whose sum is σ = 379109376. Its totient is φ = 32904000.

The previous prime is 140263483. The next prime is 140263531. The reversal of 140263530 is 35362041.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 140263530.

It is not an unprimeable number, because it can be changed into a prime (140263531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3375 + ... + 17085.

It is an arithmetic number, because the mean of its divisors is an integer number (5923584).

Almost surely, 2^140263530 is an apocalyptic number.

140263530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140263530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189554688).

140263530 is an abundant number, since it is smaller than the sum of its proper divisors (238845846).

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

140263530 is a wasteful number, since it uses less digits than its factorization.

140263530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13763.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 140263530 is about 11843.2905055985. The cubic root of 140263530 is about 519.5750102507.

The spelling of 140263530 in words is "one hundred forty million, two hundred sixty-three thousand, five hundred thirty".