20433152 has 18 divisors (see below), whose sum is σ = 40786998. Its totient is φ = 10216448.

The previous prime is 20433137. The next prime is 20433163. The reversal of 20433152 is 25133402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12503296 + 7929856 = 3536^2 + 2816^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39653 + ... + 40164.

Almost surely, 2^20433152 is an apocalyptic number.

It is an amenable number.

20433152 is a deficient number, since it is larger than the sum of its proper divisors (20353846).

20433152 is an frugal number, since it uses more digits than its factorization.

20433152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79833 (or 79819 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20433152 is about 4520.3044145279. The cubic root of 20433152 is about 273.3873751298.

Adding to 20433152 its reverse (25133402), we get a palindrome (45566554).

The spelling of 20433152 in words is "twenty million, four hundred thirty-three thousand, one hundred fifty-two".