44642840 has 64 divisors (see below), whose sum is σ = 110293920. Its totient is φ = 16128000.

The previous prime is 44642827. The next prime is 44642869. The reversal of 44642840 is 4824644.

It is a junction number, because it is equal to n+sod(n) for n = 44642797 and 44642806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105830 + ... + 106250.

Almost surely, 2^44642840 is an apocalyptic number.

44642840 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 44642840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55146960).

44642840 is an abundant number, since it is smaller than the sum of its proper divisors (65651080).

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

44642840 is a wasteful number, since it uses less digits than its factorization.

44642840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 44642840 is about 6681.5297649565. The cubic root of 44642840 is about 354.7458075851.

The spelling of 44642840 in words is "forty-four million, six hundred forty-two thousand, eight hundred forty".