40550320 has 40 divisors (see below), whose sum is σ = 94743936. Its totient is φ = 16140288.

The previous prime is 40550317. The next prime is 40550327. The reversal of 40550320 is 2305504.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (40550327) 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, 16704 + ... + 18976.

Almost surely, 2^40550320 is an apocalyptic number.

40550320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40550320 is an abundant number, since it is smaller than the sum of its proper divisors (54193616).

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

40550320 is a wasteful number, since it uses less digits than its factorization.

40550320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509 (or 2503 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 40550320 is about 6367.9133159929. The cubic root of 40550320 is about 343.5564411139.

Adding to 40550320 its reverse (2305504), we get a palindrome (42855824).

The spelling of 40550320 in words is "forty million, five hundred fifty thousand, three hundred twenty".