20470768 has 40 divisors (see below), whose sum is σ = 41182880. Its totient is φ = 9849600.

The previous prime is 20470763. The next prime is 20470777. The reversal of 20470768 is 86707402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89278 + ... + 89506.

It is an arithmetic number, because the mean of its divisors is an integer number (1029572).

Almost surely, 2^20470768 is an apocalyptic number.

It is an amenable number.

20470768 is an abundant number, since it is smaller than the sum of its proper divisors (20712112).

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

20470768 is a wasteful number, since it uses less digits than its factorization.

20470768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 20470768 is about 4524.4632830867. The cubic root of 20470768 is about 273.5550346177. Note that the first 3 decimals are identical.

The spelling of 20470768 in words is "twenty million, four hundred seventy thousand, seven hundred sixty-eight".