44881380 has 36 divisors (see below), whose sum is σ = 136140732. Its totient is φ = 11968320.

The previous prime is 44881373. The next prime is 44881387. The reversal of 44881380 is 8318844.

It is an interprime number because it is at equal distance from previous prime (44881373) and next prime (44881387).

It can be written as a sum of positive squares in 2 ways, for example, as 22810176 + 22071204 = 4776^2 + 4698^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (44881387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124491 + ... + 124850.

It is an arithmetic number, because the mean of its divisors is an integer number (3781687).

Almost surely, 2^44881380 is an apocalyptic number.

It is an amenable number.

44881380 is an abundant number, since it is smaller than the sum of its proper divisors (91259352).

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

44881380 is a wasteful number, since it uses less digits than its factorization.

44881380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249356 (or 249351 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 44881380 is about 6699.3566855333. The cubic root of 44881380 is about 355.3765230760.

It can be divided in two parts, 4488 and 1380, that multiplied together give a triangular number (6193440 = T₃₅₁₉).

The spelling of 44881380 in words is "forty-four million, eight hundred eighty-one thousand, three hundred eighty".