140923836 has 72 divisors (see below), whose sum is σ = 377395200. Its totient is φ = 44215200.

The previous prime is 140923823. The next prime is 140923837. The reversal of 140923836 is 638329041.

140923836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 140923836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140923837) 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, 121861 + ... + 123011.

It is an arithmetic number, because the mean of its divisors is an integer number (5241600).

Almost surely, 2^140923836 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 140923836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188697600).

140923836 is an abundant number, since it is smaller than the sum of its proper divisors (236471364).

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

140923836 is a wasteful number, since it uses less digits than its factorization.

140923836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 140923836 is about 11871.1345708824. The cubic root of 140923836 is about 520.3890530276.

The spelling of 140923836 in words is "one hundred forty million, nine hundred twenty-three thousand, eight hundred thirty-six".