44142320 has 80 divisors (see below), whose sum is σ = 109412640. Its totient is φ = 16515072.

The previous prime is 44142317. The next prime is 44142323. The reversal of 44142320 is 2324144.

It is an interprime number because it is at equal distance from previous prime (44142317) and next prime (44142323).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 44142292 and 44142301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44142323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171632 + ... + 171888.

It is an arithmetic number, because the mean of its divisors is an integer number (1367658).

Almost surely, 2^44142320 is an apocalyptic number.

44142320 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 44142320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54706320).

44142320 is an abundant number, since it is smaller than the sum of its proper divisors (65270320).

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

44142320 is a wasteful number, since it uses less digits than its factorization.

44142320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44142320 is about 6643.9686934843. The cubic root of 44142320 is about 353.4150596127.

Adding to 44142320 its reverse (2324144), we get a palindrome (46466464).

The spelling of 44142320 in words is "forty-four million, one hundred forty-two thousand, three hundred twenty".