43536540 has 96 divisors (see below), whose sum is σ = 127733760. Its totient is φ = 11065600.

The previous prime is 43536517. The next prime is 43536551. The reversal of 43536540 is 4563534.

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

It is a junction number, because it is equal to n+sod(n) for n = 43536498 and 43536507.

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, 227845 + ... + 228035.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 2^43536540 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 43536540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63866880).

43536540 is an abundant number, since it is smaller than the sum of its proper divisors (84197220).

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

43536540 is a wasteful number, since it uses less digits than its factorization.

43536540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 43536540 is about 6598.2224879129. Note that the first 3 decimals coincide. The cubic root of 43536540 is about 351.7909291352.

The spelling of 43536540 in words is "forty-three million, five hundred thirty-six thousand, five hundred forty".