920320140 has 48 divisors (see below), whose sum is σ = 2578883328. Its totient is φ = 245229504.

The previous prime is 920320139. The next prime is 920320147. The reversal of 920320140 is 41023029.

It is not an unprimeable number, because it can be changed into a prime (920320147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83809 + ... + 94151.

It is an arithmetic number, because the mean of its divisors is an integer number (53726736).

Almost surely, 2^920320140 is an apocalyptic number.

It is an amenable number.

920320140 is an abundant number, since it is smaller than the sum of its proper divisors (1658563188).

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

920320140 is a wasteful number, since it uses less digits than its factorization.

920320140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11838 (or 11836 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 920320140 is about 30336.7786688040. The cubic root of 920320140 is about 972.7016263920.

Adding to 920320140 its reverse (41023029), we get a palindrome (961343169).

The spelling of 920320140 in words is "nine hundred twenty million, three hundred twenty thousand, one hundred forty".