20247704 has 8 divisors (see below), whose sum is σ = 37964460. Its totient is φ = 10123848.

The previous prime is 20247701. The next prime is 20247707. The reversal of 20247704 is 40774202.

It is an interprime number because it is at equal distance from previous prime (20247701) and next prime (20247707).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20247701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265474 + ... + 1265489.

Almost surely, 2^20247704 is an apocalyptic number.

It is an amenable number.

20247704 is a deficient number, since it is larger than the sum of its proper divisors (17716756).

20247704 is a wasteful number, since it uses less digits than its factorization.

20247704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530969 (or 2530965 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 20247704 is about 4499.7448816572. The cubic root of 20247704 is about 272.5577870320.

The spelling of 20247704 in words is "twenty million, two hundred forty-seven thousand, seven hundred four".