20226984 has 16 divisors (see below), whose sum is σ = 50567520. Its totient is φ = 6742320.

The previous prime is 20226971. The next prime is 20226989. The reversal of 20226984 is 48962202.

It is not an unprimeable number, because it can be changed into a prime (20226989) 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 3 ways as a sum of consecutive naturals, for example, 421372 + ... + 421419.

It is an arithmetic number, because the mean of its divisors is an integer number (3160470).

Almost surely, 2^20226984 is an apocalyptic number.

20226984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20226984 is an abundant number, since it is smaller than the sum of its proper divisors (30340536).

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

20226984 is a wasteful number, since it uses less digits than its factorization.

20226984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842800 (or 842796 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20226984 is about 4497.4419395919. The cubic root of 20226984 is about 272.4647834859.

The spelling of 20226984 in words is "twenty million, two hundred twenty-six thousand, nine hundred eighty-four".