43998732 has 18 divisors (see below), whose sum is σ = 111219108. Its totient is φ = 14666232.

The previous prime is 43998683. The next prime is 43998733. The reversal of 43998732 is 23789934.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (43998733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611058 + ... + 611129.

Almost surely, 2^43998732 is an apocalyptic number.

It is an amenable number.

43998732 is an abundant number, since it is smaller than the sum of its proper divisors (67220376).

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

43998732 is a wasteful number, since it uses less digits than its factorization.

43998732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222197 (or 1222192 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 43998732 is about 6633.1540009260. The cubic root of 43998732 is about 353.0314422260.

It can be divided in two parts, 4399 and 8732, that added together give a palindrome (13131).

The spelling of 43998732 in words is "forty-three million, nine hundred ninety-eight thousand, seven hundred thirty-two".