40550380 has 48 divisors (see below), whose sum is σ = 95707584. Its totient is φ = 14319360.

The previous prime is 40550339. The next prime is 40550399. The reversal of 40550380 is 8305504.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2590 + ... + 9370.

It is an arithmetic number, because the mean of its divisors is an integer number (1993908).

Almost surely, 2^40550380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40550380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47853792).

40550380 is an abundant number, since it is smaller than the sum of its proper divisors (55157204).

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

40550380 is a wasteful number, since it uses less digits than its factorization.

40550380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6826 (or 6824 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40550380 is about 6367.9180271106. The cubic root of 40550380 is about 343.5566105608.

Adding to 40550380 its reverse (8305504), we get a palindrome (48855884).

The spelling of 40550380 in words is "forty million, five hundred fifty thousand, three hundred eighty".