20473668 has 48 divisors (see below), whose sum is σ = 53343360. Its totient is φ = 6790752.

The previous prime is 20473667. The next prime is 20473669. The reversal of 20473668 is 86637402.

It is an interprime number because it is at equal distance from previous prime (20473667) and next prime (20473669).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20473667) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 31321 + ... + 31967.

It is an arithmetic number, because the mean of its divisors is an integer number (1111320).

Almost surely, 2^20473668 is an apocalyptic number.

It is an amenable number.

20473668 is an abundant number, since it is smaller than the sum of its proper divisors (32869692).

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

20473668 is a wasteful number, since it uses less digits than its factorization.

20473668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 20473668 is about 4524.7837517389. The cubic root of 20473668 is about 273.5679517709.

The spelling of 20473668 in words is "twenty million, four hundred seventy-three thousand, six hundred sixty-eight".