40204544 has 18 divisors (see below), whose sum is σ = 80252550. Its totient is φ = 20102144.

The previous prime is 40204543. The next prime is 40204561. The reversal of 40204544 is 44540204.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 262144 = 6320^2 + 512^2 .

It is not an unprimeable number, because it can be changed into a prime (40204543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78269 + ... + 78780.

It is an arithmetic number, because the mean of its divisors is an integer number (4458475).

Almost surely, 2^40204544 is an apocalyptic number.

It is an amenable number.

40204544 is a deficient number, since it is larger than the sum of its proper divisors (40048006).

40204544 is an equidigital number, since it uses as much as digits as its factorization.

40204544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157065 (or 157051 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 40204544 is about 6340.7053235425. The cubic root of 40204544 is about 342.5771407042.

Adding to 40204544 its reverse (44540204), we get a palindrome (84744748).

The spelling of 40204544 in words is "forty million, two hundred four thousand, five hundred forty-four".