920317400240 has 120 divisors (see below), whose sum is σ = 2500881777072. Its totient is φ = 314041674240.

The previous prime is 920317400239. The next prime is 920317400269. The reversal of 920317400240 is 42004713029.

It is a junction number, because it is equal to n+sod(n) for n = 920317400197 and 920317400206.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 270782 + ... + 1383458.

Almost surely, 2^920317400240 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 920317400240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250440888536).

920317400240 is an abundant number, since it is smaller than the sum of its proper divisors (1580564376832).

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

920317400240 is a wasteful number, since it uses less digits than its factorization.

920317400240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112915 (or 1112902 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 920317400240 in words is "nine hundred twenty billion, three hundred seventeen million, four hundred thousand, two hundred forty".