2087486640 has 240 divisors, whose sum is σ = 7325031168. Its totient is φ = 552469248.

The previous prime is 2087486633. The next prime is 2087486651. The reversal of 2087486640 is 466847802.

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

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 3246159 + ... + 3246801.

Almost surely, 2^2087486640 is an apocalyptic number.

2087486640 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 2087486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3662515584).

2087486640 is an abundant number, since it is smaller than the sum of its proper divisors (5237544528).

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

2087486640 is a wasteful number, since it uses less digits than its factorization.

2087486640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 2087486640 is about 45689.0210006737. The cubic root of 2087486640 is about 1278.0305487639.

The spelling of 2087486640 in words is "two billion, eighty-seven million, four hundred eighty-six thousand, six hundred forty".