20223152 has 10 divisors (see below), whose sum is σ = 39182388. Its totient is φ = 10111568.

The previous prime is 20223139. The next prime is 20223167. The reversal of 20223152 is 25132202.

It is a self number, because there is not a number n which added to its sum of digits gives 20223152.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631958 + ... + 631989.

Almost surely, 2^20223152 is an apocalyptic number.

It is an amenable number.

20223152 is a deficient number, since it is larger than the sum of its proper divisors (18959236).

20223152 is a wasteful number, since it uses less digits than its factorization.

20223152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263955 (or 1263949 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20223152 is about 4497.0158994604. The cubic root of 20223152 is about 272.4475762577.

Adding to 20223152 its reverse (25132202), we get a palindrome (45355354).

The spelling of 20223152 in words is "twenty million, two hundred twenty-three thousand, one hundred fifty-two".