2320620138 has 64 divisors (see below), whose sum is σ = 5436288000. Its totient is φ = 731756592.

The previous prime is 2320620091. The next prime is 2320620149. The reversal of 2320620138 is 8310260232.

2320620138 is a `hidden beast` number, since 2 + 3 + 2 + 0 + 620 + 1 + 38 = 666.

It is a super-2 number, since 2×2320620138² = 10770555649782278088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 990973 + ... + 993311.

It is an arithmetic number, because the mean of its divisors is an integer number (84942000).

Almost surely, 2^2320620138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2320620138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2718144000).

2320620138 is an abundant number, since it is smaller than the sum of its proper divisors (3115667862).

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

2320620138 is a wasteful number, since it uses less digits than its factorization.

2320620138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336 (or 3330 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2320620138 is about 48172.8153422654. The cubic root of 2320620138 is about 1323.9391319456.

The spelling of 2320620138 in words is "two billion, three hundred twenty million, six hundred twenty thousand, one hundred thirty-eight".