44320273920 has 480 divisors, whose sum is σ = 167647832352. Its totient is φ = 10754850816.

The previous prime is 44320273919. The next prime is 44320273939. The reversal of 44320273920 is 2937202344.

It is a happy number.

44320273920 is a `hidden beast` number, since 44 + 320 + 273 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21863947 + ... + 21865973.

Almost surely, 2^44320273920 is an apocalyptic number.

44320273920 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 44320273920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83823916176).

44320273920 is an abundant number, since it is smaller than the sum of its proper divisors (123327558432).

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

44320273920 is a wasteful number, since it uses less digits than its factorization.

44320273920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 44320273920 in words is "forty-four billion, three hundred twenty million, two hundred seventy-three thousand, nine hundred twenty".