20433442 has 8 divisors (see below), whose sum is σ = 30739536. Its totient is φ = 10186932.

The previous prime is 20433437. The next prime is 20433443. The reversal of 20433442 is 24433402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20433443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14028 + ... + 15415.

It is an arithmetic number, because the mean of its divisors is an integer number (3842442).

Almost surely, 2^20433442 is an apocalyptic number.

20433442 is a deficient number, since it is larger than the sum of its proper divisors (10306094).

20433442 is a wasteful number, since it uses less digits than its factorization.

20433442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29792.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 20433442 is about 4520.3364918997. The cubic root of 20433442 is about 273.3886684849.

Adding to 20433442 its reverse (24433402), we get a palindrome (44866844).

The spelling of 20433442 in words is "twenty million, four hundred thirty-three thousand, four hundred forty-two".