140383920 has 80 divisors (see below), whose sum is σ = 446980320. Its totient is φ = 36421632.

The previous prime is 140383897. The next prime is 140383931. The reversal of 140383920 is 29383041.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 976 + ... + 16784.

It is an arithmetic number, because the mean of its divisors is an integer number (5587254).

Almost surely, 2^140383920 is an apocalyptic number.

140383920 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 140383920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223490160).

140383920 is an abundant number, since it is smaller than the sum of its proper divisors (306596400).

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

140383920 is a wasteful number, since it uses less digits than its factorization.

140383920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15862 (or 15856 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 140383920 is about 11848.3720400737. The cubic root of 140383920 is about 519.7236203889.

The spelling of 140383920 in words is "one hundred forty million, three hundred eighty-three thousand, nine hundred twenty".