40140320 has 48 divisors (see below), whose sum is σ = 103457088. Its totient is φ = 14595840.

The previous prime is 40140307. The next prime is 40140337. The reversal of 40140320 is 2304104.

It is a super-2 number, since 2×40140320² = 3222490579404800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40140295 and 40140304.

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 7 ways as a sum of consecutive naturals, for example, 9644 + ... + 13163.

It is an arithmetic number, because the mean of its divisors is an integer number (2155356).

Almost surely, 2^40140320 is an apocalyptic number.

40140320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40140320 is an abundant number, since it is smaller than the sum of its proper divisors (63316768).

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

40140320 is a wasteful number, since it uses less digits than its factorization.

40140320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22833 (or 22825 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40140320 is about 6335.6388785978. The cubic root of 40140320 is about 342.3946289954.

Adding to 40140320 its reverse (2304104), we get a palindrome (42444424).

The spelling of 40140320 in words is "forty million, one hundred forty thousand, three hundred twenty".