44721656 has 32 divisors (see below), whose sum is σ = 96831840. Its totient is φ = 18966528.

The previous prime is 44721643. The next prime is 44721659. The reversal of 44721656 is 65612744.

It is a super-3 number, since 3×44721656³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44721659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316 + ... + 9548.

It is an arithmetic number, because the mean of its divisors is an integer number (3025995).

Almost surely, 2^44721656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44721656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48415920).

44721656 is an abundant number, since it is smaller than the sum of its proper divisors (52110184).

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

44721656 is a wasteful number, since it uses less digits than its factorization.

44721656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343 (or 8339 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 44721656 is about 6687.4252145351. The cubic root of 44721656 is about 354.9544502822.

The spelling of 44721656 in words is "forty-four million, seven hundred twenty-one thousand, six hundred fifty-six".