2396561640 has 128 divisors (see below), whose sum is σ = 8096440320. Its totient is φ = 562233600.

The previous prime is 2396561639. The next prime is 2396561641. The reversal of 2396561640 is 461656932.

It is an interprime number because it is at equal distance from previous prime (2396561639) and next prime (2396561641).

It is a junction number, because it is equal to n+sod(n) for n = 2396561592 and 2396561601.

It is not an unprimeable number, because it can be changed into a prime (2396561641) 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, 11637 + ... + 70203.

It is an arithmetic number, because the mean of its divisors is an integer number (63253440).

Almost surely, 2^2396561640 is an apocalyptic number.

2396561640 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 2396561640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4048220160).

2396561640 is an abundant number, since it is smaller than the sum of its proper divisors (5699878680).

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

2396561640 is a wasteful number, since it uses less digits than its factorization.

2396561640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58623 (or 58619 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 2396561640 is about 48954.6896629935. The cubic root of 2396561640 is about 1338.2262191767.

The spelling of 2396561640 in words is "two billion, three hundred ninety-six million, five hundred sixty-one thousand, six hundred forty".