40450220 has 24 divisors (see below), whose sum is σ = 85140384. Its totient is φ = 16142976.

The previous prime is 40450199. The next prime is 40450237. The reversal of 40450220 is 2205404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7664 + ... + 11816.

It is an arithmetic number, because the mean of its divisors is an integer number (3547516).

Almost surely, 2^40450220 is an apocalyptic number.

It is an amenable number.

40450220 is an abundant number, since it is smaller than the sum of its proper divisors (44690164).

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

40450220 is a wasteful number, since it uses less digits than its factorization.

40450220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649 (or 4647 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 40450220 is about 6360.0487419516. The cubic root of 40450220 is about 343.2735141538.

Adding to 40450220 its reverse (2205404), we get a palindrome (42655624).

The spelling of 40450220 in words is "forty million, four hundred fifty thousand, two hundred twenty".