20474648 has 16 divisors (see below), whose sum is σ = 38439960. Its totient is φ = 10224000.

The previous prime is 20474633. The next prime is 20474651. The reversal of 20474648 is 84647402.

It is a super-2 number, since 2×20474648² = 838422421447808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8543 + ... + 10673.

Almost surely, 2^20474648 is an apocalyptic number.

It is an amenable number.

20474648 is a deficient number, since it is larger than the sum of its proper divisors (17965312).

20474648 is a wasteful number, since it uses less digits than its factorization.

20474648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338 (or 3334 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 20474648 is about 4524.8920429111. The cubic root of 20474648 is about 273.5723166022.

The spelling of 20474648 in words is "twenty million, four hundred seventy-four thousand, six hundred forty-eight".