2371620440 has 128 divisors (see below), whose sum is σ = 6234762240. Its totient is φ = 795142656.

The previous prime is 2371620431. The next prime is 2371620443. The reversal of 2371620440 is 440261732.

It is a super-2 number, since 2×2371620440² = 11249167022851587200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2371620443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3132542 + ... + 3133298.

It is an arithmetic number, because the mean of its divisors is an integer number (48709080).

Almost surely, 2^2371620440 is an apocalyptic number.

2371620440 is a gapful number since it is divisible by the number (20) 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 2371620440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3117381120).

2371620440 is an abundant number, since it is smaller than the sum of its proper divisors (3863141800).

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

2371620440 is a wasteful number, since it uses less digits than its factorization.

2371620440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 2371620440 is about 48699.2858263856. The cubic root of 2371620440 is about 1333.5676801976.

The spelling of 2371620440 in words is "two billion, three hundred seventy-one million, six hundred twenty thousand, four hundred forty".