43457040 has 320 divisors, whose sum is σ = 171417600. Its totient is φ = 10022400.

The previous prime is 43457033. The next prime is 43457069. The reversal of 43457040 is 4075434.

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

It is a junction number, because it is equal to n+sod(n) for n = 43456995 and 43457013.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 736531 + ... + 736589.

It is an arithmetic number, because the mean of its divisors is an integer number (535680).

Almost surely, 2^43457040 is an apocalyptic number.

43457040 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 43457040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85708800).

43457040 is an abundant number, since it is smaller than the sum of its proper divisors (127960560).

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

43457040 is a wasteful number, since it uses less digits than its factorization.

43457040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 111 counting only the distinct ones).

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

The square root of 43457040 is about 6592.1953854539. The cubic root of 43457040 is about 351.5766691178.

The spelling of 43457040 in words is "forty-three million, four hundred fifty-seven thousand, forty".