44172240 has 80 divisors (see below), whose sum is σ = 156501888. Its totient is φ = 10096128.

The previous prime is 44172197. The next prime is 44172253. The reversal of 44172240 is 4227144.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 44172240.

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, 11467 + ... + 14826.

Almost surely, 2^44172240 is an apocalyptic number.

44172240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44172240 is an abundant number, since it is smaller than the sum of its proper divisors (112329648).

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

44172240 is a wasteful number, since it uses less digits than its factorization.

44172240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26316 (or 26310 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 44172240 is about 6646.2199783035. The cubic root of 44172240 is about 353.4948907165.

Adding to 44172240 its reverse (4227144), we get a palindrome (48399384).

The spelling of 44172240 in words is "forty-four million, one hundred seventy-two thousand, two hundred forty".