43427880 has 128 divisors (see below), whose sum is σ = 146880000. Its totient is φ = 11411712.

The previous prime is 43427851. The next prime is 43427903. The reversal of 43427880 is 8872434.

It is a super-2 number, since 2×43427880² = 3771961522588800, which contains 22 as substring.

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

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, 85066 + ... + 85574.

It is an arithmetic number, because the mean of its divisors is an integer number (1147500).

Almost surely, 2^43427880 is an apocalyptic number.

43427880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43427880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73440000).

43427880 is an abundant number, since it is smaller than the sum of its proper divisors (103452120).

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

43427880 is a wasteful number, since it uses less digits than its factorization.

43427880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 598 counting only the distinct ones).

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

The square root of 43427880 is about 6589.9833080213. The cubic root of 43427880 is about 351.4980146614.

The spelling of 43427880 in words is "forty-three million, four hundred twenty-seven thousand, eight hundred eighty".