20369349 has 144 divisors (see below), whose sum is σ = 44815680. Its totient is φ = 8709120.

The previous prime is 20369347. The next prime is 20369369. The reversal of 20369349 is 94396302.

It is a happy number.

It is not a de Polignac number, because 20369349 - 2¹ = 20369347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20369347) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1072062 + ... + 1072080.

It is an arithmetic number, because the mean of its divisors is an integer number (311220).

Almost surely, 2^20369349 is an apocalyptic number.

It is an amenable number.

20369349 is an abundant number, since it is smaller than the sum of its proper divisors (24446331).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20369349 is a wasteful number, since it uses less digits than its factorization.

20369349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 20369349 is about 4513.2415180223. The cubic root of 20369349 is about 273.1025255941.

The spelling of 20369349 in words is "twenty million, three hundred sixty-nine thousand, three hundred forty-nine".