40663020 has 24 divisors (see below), whose sum is σ = 113856624. Its totient is φ = 10843456.

The previous prime is 40663013. The next prime is 40663043. The reversal of 40663020 is 2036604.

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, 338799 + ... + 338918.

It is an arithmetic number, because the mean of its divisors is an integer number (4744026).

Almost surely, 2^40663020 is an apocalyptic number.

It is an amenable number.

40663020 is an abundant number, since it is smaller than the sum of its proper divisors (73193604).

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

40663020 is a wasteful number, since it uses less digits than its factorization.

40663020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677729 (or 677727 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 40663020 is about 6376.7562286793. The cubic root of 40663020 is about 343.8744245994.

Adding to 40663020 its reverse (2036604), we get a palindrome (42699624).

The spelling of 40663020 in words is "forty million, six hundred sixty-three thousand, twenty".