20212449 has 16 divisors (see below), whose sum is σ = 27998400. Its totient is φ = 12954816.

The previous prime is 20212421. The next prime is 20212453. The reversal of 20212449 is 94421202.

It is not a de Polignac number, because 20212449 - 2⁵ = 20212417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32667 + ... + 33279.

It is an arithmetic number, because the mean of its divisors is an integer number (1749900).

Almost surely, 2^20212449 is an apocalyptic number.

20212449 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20212449 is a deficient number, since it is larger than the sum of its proper divisors (7785951).

20212449 is a wasteful number, since it uses less digits than its factorization.

20212449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20212449 is about 4495.8257306083. The cubic root of 20212449 is about 272.3995039462.

The spelling of 20212449 in words is "twenty million, two hundred twelve thousand, four hundred forty-nine".