20247222 has 16 divisors (see below), whose sum is σ = 42255360. Its totient is φ = 6455592.

The previous prime is 20247211. The next prime is 20247239. The reversal of 20247222 is 22274202.

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, 73222 + ... + 73497.

It is an arithmetic number, because the mean of its divisors is an integer number (2640960).

Almost surely, 2^20247222 is an apocalyptic number.

20247222 is an abundant number, since it is smaller than the sum of its proper divisors (22008138).

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

20247222 is a wasteful number, since it uses less digits than its factorization.

20247222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146747.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 20247222 is about 4499.6913227465. The cubic root of 20247222 is about 272.5556242536. Note that the first 3 decimals are identical.

The spelling of 20247222 in words is "twenty million, two hundred forty-seven thousand, two hundred twenty-two".