43540740 has 216 divisors, whose sum is σ = 150189312. Its totient is φ = 10575360.

The previous prime is 43540703. The next prime is 43540751. The reversal of 43540740 is 4704534.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1404525 + ... + 1404555.

Almost surely, 2^43540740 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 43540740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75094656).

43540740 is an abundant number, since it is smaller than the sum of its proper divisors (106648572).

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

43540740 is a wasteful number, since it uses less digits than its factorization.

43540740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 43540740 is about 6598.5407477714. The cubic root of 43540740 is about 351.8022412759.

The spelling of 43540740 in words is "forty-three million, five hundred forty thousand, seven hundred forty".