44138480 has 20 divisors (see below), whose sum is σ = 102622152. Its totient is φ = 17655360.

The previous prime is 44138467. The next prime is 44138489. The reversal of 44138480 is 8483144.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44138489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275786 + ... + 275945.

Almost surely, 2^44138480 is an apocalyptic number.

44138480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44138480 is an abundant number, since it is smaller than the sum of its proper divisors (58483672).

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

44138480 is a wasteful number, since it uses less digits than its factorization.

44138480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551744 (or 551738 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 44138480 is about 6643.6797032970. The cubic root of 44138480 is about 353.4048112978.

The spelling of 44138480 in words is "forty-four million, one hundred thirty-eight thousand, four hundred eighty".