20437349 has 8 divisors (see below), whose sum is σ = 21755160. Its totient is φ = 19132416.

The previous prime is 20437327. The next prime is 20437381. The reversal of 20437349 is 94373402.

It can be written as a sum of positive squares in 4 ways, for example, as 3214849 + 17222500 = 1793^2 + 4150^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20437349 - 2⁸ = 20437093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20437049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167 + ... + 6395.

It is an arithmetic number, because the mean of its divisors is an integer number (2719395).

Almost surely, 2^20437349 is an apocalyptic number.

It is an amenable number.

20437349 is a deficient number, since it is larger than the sum of its proper divisors (1317811).

20437349 is a wasteful number, since it uses less digits than its factorization.

20437349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 20437349 is about 4520.7686293373. The cubic root of 20437349 is about 273.4060919070.

The spelling of 20437349 in words is "twenty million, four hundred thirty-seven thousand, three hundred forty-nine".