20470080 has 56 divisors (see below), whose sum is σ = 64995552. Its totient is φ = 5458432.

The previous prime is 20470061. The next prime is 20470097. The reversal of 20470080 is 8007402.

It is a happy number.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9702 + ... + 11621.

Almost surely, 2^20470080 is an apocalyptic number.

20470080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20470080 is an abundant number, since it is smaller than the sum of its proper divisors (44525472).

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

20470080 is a wasteful number, since it uses less digits than its factorization.

20470080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21343 (or 21333 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20470080 is about 4524.3872513303. The cubic root of 20470080 is about 273.5519699554.

Adding to 20470080 its reverse (8007402), we get a palindrome (28477482).

The spelling of 20470080 in words is "twenty million, four hundred seventy thousand, eighty".