40661200 has 30 divisors (see below), whose sum is σ = 97689494. Its totient is φ = 16264320.

The previous prime is 40661167. The next prime is 40661213. The reversal of 40661200 is 216604.

It can be written as a sum of positive squares in 3 ways, for example, as 11888704 + 28772496 = 3448^2 + 5364^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 50427 + ... + 51226.

Almost surely, 2^40661200 is an apocalyptic number.

40661200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40661200 is an abundant number, since it is smaller than the sum of its proper divisors (57028294).

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

40661200 is a wasteful number, since it uses less digits than its factorization.

40661200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101671 (or 101660 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40661200 is about 6376.6135212980. The cubic root of 40661200 is about 343.8692941329.

Adding to 40661200 its reverse (216604), we get a palindrome (40877804).

The spelling of 40661200 in words is "forty million, six hundred sixty-one thousand, two hundred".