40115320 has 96 divisors (see below), whose sum is σ = 106580880. Its totient is φ = 13547520.

The previous prime is 40115303. The next prime is 40115347. The reversal of 40115320 is 2351104.

It is a junction number, because it is equal to n+sod(n) for n = 40115294 and 40115303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190015 + ... + 190225.

Almost surely, 2^40115320 is an apocalyptic number.

40115320 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 40115320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53290440).

40115320 is an abundant number, since it is smaller than the sum of its proper divisors (66465560).

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

40115320 is a wasteful number, since it uses less digits than its factorization.

40115320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 40115320 is about 6333.6656053189. The cubic root of 40115320 is about 342.3235313775.

Adding to 40115320 its reverse (2351104), we get a palindrome (42466424).

The spelling of 40115320 in words is "forty million, one hundred fifteen thousand, three hundred twenty".