2387354640 has 240 divisors, whose sum is σ = 8351304768. Its totient is φ = 559488000.

The previous prime is 2387354597. The next prime is 2387354689. The reversal of 2387354640 is 464537832.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 2387354592 and 2387354601.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2536570 + ... + 2537510.

Almost surely, 2^2387354640 is an apocalyptic number.

2387354640 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 2387354640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4175652384).

2387354640 is an abundant number, since it is smaller than the sum of its proper divisors (5963950128).

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

2387354640 is a wasteful number, since it uses less digits than its factorization.

2387354640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The square root of 2387354640 is about 48860.5632386693. The cubic root of 2387354640 is about 1336.5103080005.

The spelling of 2387354640 in words is "two billion, three hundred eighty-seven million, three hundred fifty-four thousand, six hundred forty".