20249436 has 12 divisors (see below), whose sum is σ = 47248712. Its totient is φ = 6749808.

The previous prime is 20249423. The next prime is 20249441. The reversal of 20249436 is 63494202.

It is a tau number, because it is divible by the number of its divisors (12).

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, 843715 + ... + 843738.

Almost surely, 2^20249436 is an apocalyptic number.

It is an amenable number.

20249436 is an abundant number, since it is smaller than the sum of its proper divisors (26999276).

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

20249436 is a wasteful number, since it uses less digits than its factorization.

20249436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687460 (or 1687458 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20249436 is about 4499.9373328970. The cubic root of 20249436 is about 272.5655583927.

The spelling of 20249436 in words is "twenty million, two hundred forty-nine thousand, four hundred thirty-six".