2287745 has 16 divisors (see below), whose sum is σ = 2857680. Its totient is φ = 1757184.

The previous prime is 2287739. The next prime is 2287777. The reversal of 2287745 is 5477822.

2287745 = T₄₆ + T₄₇ + ... + T₂₃₉.

2287745 = 103² + 104² + ... + 199².

It can be written as a sum of positive squares in 8 ways, for example, as 49729 + 2238016 = 223^2 + 1496^2 .

It is a cyclic number.

It is not a de Polignac number, because 2287745 - 2¹² = 2283649 is a prime.

It is a d-powerful number, because it can be written as 2 + 2²⁰ + 8⁴ + 7⁵ + 7⁷ + 4⁶ + 5⁸ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23537 + ... + 23633.

It is an arithmetic number, because the mean of its divisors is an integer number (178605).

2^2287745 is an apocalyptic number.

It is an amenable number.

2287745 is a deficient number, since it is larger than the sum of its proper divisors (569935).

2287745 is an equidigital number, since it uses as much as digits as its factorization.

2287745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244.

The product of its digits is 31360, while the sum is 35.

The square root of 2287745 is about 1512.5293385584. The cubic root of 2287745 is about 131.7657499831.

It can be divided in two parts, 22877 and 45, that added together give a palindrome (22922).

The spelling of 2287745 in words is "two million, two hundred eighty-seven thousand, seven hundred forty-five".