20447076 has 24 divisors (see below), whose sum is σ = 51380224. Its totient is φ = 6291360.

The previous prime is 20447057. The next prime is 20447083. The reversal of 20447076 is 67074402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65380 + ... + 65691.

Almost surely, 2^20447076 is an apocalyptic number.

20447076 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20447076 is an abundant number, since it is smaller than the sum of its proper divisors (30933148).

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

20447076 is a wasteful number, since it uses less digits than its factorization.

20447076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131091 (or 131089 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 20447076 is about 4521.8443139940. The cubic root of 20447076 is about 273.4494602072.

The spelling of 20447076 in words is "twenty million, four hundred forty-seven thousand, seventy-six".