43487220 has 96 divisors (see below), whose sum is σ = 142184448. Its totient is φ = 9724032.

The previous prime is 43487201. The next prime is 43487231. The reversal of 43487220 is 2278434.

It is a super-2 number, since 2×43487220² = 3782276606656800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18639 + ... + 20841.

It is an arithmetic number, because the mean of its divisors is an integer number (1481088).

Almost surely, 2^43487220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43487220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71092224).

43487220 is an abundant number, since it is smaller than the sum of its proper divisors (98697228).

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

43487220 is a wasteful number, since it uses less digits than its factorization.

43487220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269 (or 2267 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 43487220 is about 6594.4840586660. The cubic root of 43487220 is about 351.6580378178.

The spelling of 43487220 in words is "forty-three million, four hundred eighty-seven thousand, two hundred twenty".