20370404 has 12 divisors (see below), whose sum is σ = 35855484. Its totient is φ = 10125984.

The previous prime is 20370377. The next prime is 20370439. The reversal of 20370404 is 40407302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19272100 + 1098304 = 4390^2 + 1048^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14027 + ... + 15410.

It is an arithmetic number, because the mean of its divisors is an integer number (2987957).

Almost surely, 2^20370404 is an apocalyptic number.

It is an amenable number.

20370404 is a deficient number, since it is larger than the sum of its proper divisors (15485080).

20370404 is a wasteful number, since it uses less digits than its factorization.

20370404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29614 (or 29612 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20370404 is about 4513.3583948098. The cubic root of 20370404 is about 273.1072404918.

Adding to 20370404 its reverse (40407302), we get a palindrome (60777706).

It can be divided in two parts, 203 and 70404, that added together give a palindrome (70607).

The spelling of 20370404 in words is "twenty million, three hundred seventy thousand, four hundred four".