2887631656 has 64 divisors (see below), whose sum is σ = 6673363200. Its totient is φ = 1140715008.

The previous prime is 2887631653. The next prime is 2887631671. The reversal of 2887631656 is 6561367882.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (2887631653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586501 + ... + 591403.

It is an arithmetic number, because the mean of its divisors is an integer number (104271300).

Almost surely, 2^2887631656 is an apocalyptic number.

2887631656 is a gapful number since it is divisible by the number (26) 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 2887631656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3336681600).

2887631656 is an abundant number, since it is smaller than the sum of its proper divisors (3785731544).

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

2887631656 is a wasteful number, since it uses less digits than its factorization.

2887631656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5738 (or 5734 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The square root of 2887631656 is about 53736.6881748401. The cubic root of 2887631656 is about 1424.0129257022.

The spelling of 2887631656 in words is "two billion, eight hundred eighty-seven million, six hundred thirty-one thousand, six hundred fifty-six".