2006288644 has 12 divisors (see below), whose sum is σ = 3545768268. Its totient is φ = 993212000.

The previous prime is 2006288633. The next prime is 2006288651. The reversal of 2006288644 is 4468826002.

It can be written as a sum of positive squares in 2 ways, for example, as 1435652100 + 570636544 = 37890^2 + 23888^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2006288597 and 2006288606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2482627 + ... + 2483434.

It is an arithmetic number, because the mean of its divisors is an integer number (295480689).

Almost surely, 2^2006288644 is an apocalyptic number.

It is an amenable number.

2006288644 is a deficient number, since it is larger than the sum of its proper divisors (1539479624).

2006288644 is a wasteful number, since it uses less digits than its factorization.

2006288644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966166 (or 4966164 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 2006288644 is about 44791.6135453949. The cubic root of 2006288644 is about 1261.2402007396.

The spelling of 2006288644 in words is "two billion, six million, two hundred eighty-eight thousand, six hundred forty-four".