2287636 has 48 divisors (see below), whose sum is σ = 4692240. Its totient is φ = 967680.

The previous prime is 2287633. The next prime is 2287661. The reversal of 2287636 is 6367822.

It can be written as a sum of positive squares in 8 ways, for example, as 126736 + 2160900 = 356^2 + 1470^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 8 + 7³ + 6 + 3¹⁰ + 6 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287633) 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, 55776 + ... + 55816.

It is an arithmetic number, because the mean of its divisors is an integer number (97755).

2^2287636 is an apocalyptic number.

2287636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2287636 is an abundant number, since it is smaller than the sum of its proper divisors (2404604).

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

2287636 is a wasteful number, since it uses less digits than its factorization.

2287636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 122 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 2287636 is about 1512.4933057703. The cubic root of 2287636 is about 131.7636572827.

The spelling of 2287636 in words is "two million, two hundred eighty-seven thousand, six hundred thirty-six".