43261980 has 48 divisors (see below), whose sum is σ = 122680320. Its totient is φ = 11389248.

The previous prime is 43261979. The next prime is 43261987. The reversal of 43261980 is 8916234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43261987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177 + ... + 9303.

It is an arithmetic number, because the mean of its divisors is an integer number (2555840).

Almost surely, 2^43261980 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 43261980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61340160).

43261980 is an abundant number, since it is smaller than the sum of its proper divisors (79418340).

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

43261980 is a wasteful number, since it uses less digits than its factorization.

43261980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9218 (or 9216 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 43261980 is about 6577.3839784522. The cubic root of 43261980 is about 351.0498545268.

The spelling of 43261980 in words is "forty-three million, two hundred sixty-one thousand, nine hundred eighty".