44820640 has 24 divisors (see below), whose sum is σ = 105889140. Its totient is φ = 17928192.

The previous prime is 44820593. The next prime is 44820647. The reversal of 44820640 is 4602844.

It can be written as a sum of positive squares in 2 ways, for example, as 44249104 + 571536 = 6652^2 + 756^2 .

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 44820599 and 44820608.

It is not an unprimeable number, because it can be changed into a prime (44820647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139905 + ... + 140224.

Almost surely, 2^44820640 is an apocalyptic number.

44820640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44820640 is an abundant number, since it is smaller than the sum of its proper divisors (61068500).

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

44820640 is a wasteful number, since it uses less digits than its factorization.

44820640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280144 (or 280136 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 44820640 is about 6694.8218796320. The cubic root of 44820640 is about 355.2161349974.

The spelling of 44820640 in words is "forty-four million, eight hundred twenty thousand, six hundred forty".