37218404 has 12 divisors (see below), whose sum is σ = 65221884. Its totient is φ = 18583584.

The previous prime is 37218403. The next prime is 37218409. The reversal of 37218404 is 40481273.

37218404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1098304 + 36120100 = 1048^2 + 6010^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37218403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2927 + ... + 9110.

It is an arithmetic number, because the mean of its divisors is an integer number (5435157).

Almost surely, 2^37218404 is an apocalyptic number.

It is an amenable number.

37218404 is a deficient number, since it is larger than the sum of its proper divisors (28003480).

37218404 is a wasteful number, since it uses less digits than its factorization.

37218404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12814 (or 12812 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 37218404 is about 6100.6888135685. The cubic root of 37218404 is about 333.8765484932.

Adding to 37218404 its reverse (40481273), we get a palindrome (77699677).

The spelling of 37218404 in words is "thirty-seven million, two hundred eighteen thousand, four hundred four".