43487028 has 36 divisors (see below), whose sum is σ = 118382628. Its totient is φ = 13380480.

The previous prime is 43487023. The next prime is 43487039. The reversal of 43487028 is 82078434.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 41447844 = 1428^2 + 6438^2 .

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

It is a super-2 number, since 2×43487028² = 3782243208545568, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 43486983 and 43487001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43487023) 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, 45993 + ... + 46928.

Almost surely, 2^43487028 is an apocalyptic number.

It is an amenable number.

43487028 is an abundant number, since it is smaller than the sum of its proper divisors (74895600).

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

43487028 is a wasteful number, since it uses less digits than its factorization.

43487028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92944 (or 92939 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 43487028 is about 6594.4695010289. The cubic root of 43487028 is about 351.6575202830.

The spelling of 43487028 in words is "forty-three million, four hundred eighty-seven thousand, twenty-eight".