40175730 has 128 divisors (see below), whose sum is σ = 126835200. Its totient is φ = 8854272.

The previous prime is 40175713. The next prime is 40175731. The reversal of 40175730 is 3757104.

It is a super-2 number, since 2×40175730² = 3228178562065800, which contains 22 as substring.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40175694 and 40175703.

It is not an unprimeable number, because it can be changed into a prime (40175731) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54444 + ... + 55176.

It is an arithmetic number, because the mean of its divisors is an integer number (990900).

Almost surely, 2^40175730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40175730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63417600).

40175730 is an abundant number, since it is smaller than the sum of its proper divisors (86659470).

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

40175730 is a wasteful number, since it uses less digits than its factorization.

40175730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 40175730 is about 6338.4327715927. The cubic root of 40175730 is about 342.4952811611.

The spelling of 40175730 in words is "forty million, one hundred seventy-five thousand, seven hundred thirty".