40163730 has 16 divisors (see below), whose sum is σ = 96393024. Its totient is φ = 10710320.

The previous prime is 40163713. The next prime is 40163731. The reversal of 40163730 is 3736104.

It is a super-2 number, since 2×40163730² = 3226250415025800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40163730.

It is not an unprimeable number, because it can be changed into a prime (40163731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669366 + ... + 669425.

It is an arithmetic number, because the mean of its divisors is an integer number (6024564).

Almost surely, 2^40163730 is an apocalyptic number.

40163730 is an abundant number, since it is smaller than the sum of its proper divisors (56229294).

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

40163730 is a wasteful number, since it uses less digits than its factorization.

40163730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338801.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 40163730 is about 6337.4860946593. The cubic root of 40163730 is about 342.4611780460.

Adding to 40163730 its reverse (3736104), we get a palindrome (43899834).

The spelling of 40163730 in words is "forty million, one hundred sixty-three thousand, seven hundred thirty".