2044640400 has 120 divisors (see below), whose sum is σ = 7145134944. Its totient is φ = 495667200.

The previous prime is 2044640333. The next prime is 2044640417. The reversal of 2044640400 is 40464402.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64249 + ... + 90648.

Almost surely, 2^2044640400 is an apocalyptic number.

2044640400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044640400 is an abundant number, since it is smaller than the sum of its proper divisors (5100494544).

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

2044640400 is a wasteful number, since it uses less digits than its factorization.

2044640400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154929 (or 154918 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2044640400 is about 45217.7000741966. The cubic root of 2044640400 is about 1269.2260562374.

The spelling of 2044640400 in words is "two billion, forty-four million, six hundred forty thousand, four hundred".