20436448 has 24 divisors (see below), whose sum is σ = 42602112. Its totient is φ = 9616896.

The previous prime is 20436433. The next prime is 20436461. The reversal of 20436448 is 84463402.

It is a congruent number.

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, 18240 + ... + 19327.

It is an arithmetic number, because the mean of its divisors is an integer number (1775088).

Almost surely, 2^20436448 is an apocalyptic number.

It is an amenable number.

20436448 is an abundant number, since it is smaller than the sum of its proper divisors (22165664).

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

20436448 is a wasteful number, since it uses less digits than its factorization.

20436448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37594 (or 37586 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 20436448 is about 4520.6689770431. The cubic root of 20436448 is about 273.4020740587.

The spelling of 20436448 in words is "twenty million, four hundred thirty-six thousand, four hundred forty-eight".