44770440 has 128 divisors (see below), whose sum is σ = 157852800. Its totient is φ = 10014720.

The previous prime is 44770409. The next prime is 44770457. The reversal of 44770440 is 4407744.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 44770398 and 44770407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15856 + ... + 18464.

It is an arithmetic number, because the mean of its divisors is an integer number (1233225).

Almost surely, 2^44770440 is an apocalyptic number.

44770440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44770440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78926400).

44770440 is an abundant number, since it is smaller than the sum of its proper divisors (113082360).

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

44770440 is a wasteful number, since it uses less digits than its factorization.

44770440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647 (or 2643 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 44770440 is about 6691.0716630447. The cubic root of 44770440 is about 355.0834690986.

It can be divided in two parts, 447704 and 40, that added together give a palindrome (447744).

The spelling of 44770440 in words is "forty-four million, seven hundred seventy thousand, four hundred forty".