44646642 has 48 divisors (see below), whose sum is σ = 101724480. Its totient is φ = 14134176.

The previous prime is 44646619. The next prime is 44646643. The reversal of 44646642 is 24664644.

It is a happy number.

44646642 is a `hidden beast` number, since 4 + 4 + 6 + 4 + 6 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 44646597 and 44646606.

It is not an unprimeable number, because it can be changed into a prime (44646643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27859 + ... + 29417.

It is an arithmetic number, because the mean of its divisors is an integer number (2119260).

Almost surely, 2^44646642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44646642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50862240).

44646642 is an abundant number, since it is smaller than the sum of its proper divisors (57077838).

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

44646642 is a wasteful number, since it uses less digits than its factorization.

44646642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647 (or 1644 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 44646642 is about 6681.8142745814. The cubic root of 44646642 is about 354.7558779217.

The spelling of 44646642 in words is "forty-four million, six hundred forty-six thousand, six hundred forty-two".