20229776 has 20 divisors (see below), whose sum is σ = 44794752. Its totient is φ = 8669856.

The previous prime is 20229761. The next prime is 20229793. The reversal of 20229776 is 67792202.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 90200 + ... + 90423.

Almost surely, 2^20229776 is an apocalyptic number.

It is an amenable number.

20229776 is an abundant number, since it is smaller than the sum of its proper divisors (24564976).

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

20229776 is a wasteful number, since it uses less digits than its factorization.

20229776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180638 (or 180632 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20229776 is about 4497.7523275521. The cubic root of 20229776 is about 272.4773193254.

The spelling of 20229776 in words is "twenty million, two hundred twenty-nine thousand, seven hundred seventy-six".