2628444465 has 16 divisors (see below), whose sum is σ = 4672790400. Its totient is φ = 1401836976.

The previous prime is 2628444463. The next prime is 2628444487. The reversal of 2628444465 is 5644448262.

It is not a de Polignac number, because 2628444465 - 2¹ = 2628444463 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2628444465.

It is not an unprimeable number, because it can be changed into a prime (2628444463) 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, 9734845 + ... + 9735114.

It is an arithmetic number, because the mean of its divisors is an integer number (292049400).

Almost surely, 2^2628444465 is an apocalyptic number.

It is an amenable number.

2628444465 is a deficient number, since it is larger than the sum of its proper divisors (2044345935).

2628444465 is a wasteful number, since it uses less digits than its factorization.

2628444465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19469973 (or 19469967 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 45.

The square root of 2628444465 is about 51268.3573464179. The cubic root of 2628444465 is about 1380.0651906822.

The spelling of 2628444465 in words is "two billion, six hundred twenty-eight million, four hundred forty-four thousand, four hundred sixty-five".