20437316 has 6 divisors (see below), whose sum is σ = 35765310. Its totient is φ = 10218656.

The previous prime is 20437303. The next prime is 20437327. The reversal of 20437316 is 61373402.

It can be written as a sum of positive squares in only one way, i.e., 11195716 + 9241600 = 3346^2 + 3040^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2554661 + ... + 2554668.

It is an arithmetic number, because the mean of its divisors is an integer number (5960885).

Almost surely, 2^20437316 is an apocalyptic number.

It is an amenable number.

20437316 is a deficient number, since it is larger than the sum of its proper divisors (15327994).

20437316 is a wasteful number, since it uses less digits than its factorization.

20437316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109333 (or 5109331 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 20437316 is about 4520.7649795140. The cubic root of 20437316 is about 273.4059447515.

The spelling of 20437316 in words is "twenty million, four hundred thirty-seven thousand, three hundred sixteen".