20022734 has 4 divisors (see below), whose sum is σ = 30034104. Its totient is φ = 10011366.

The previous prime is 20022733. The next prime is 20022791. The reversal of 20022734 is 43722002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005682 + ... + 5005685.

It is an arithmetic number, because the mean of its divisors is an integer number (7508526).

Almost surely, 2^20022734 is an apocalyptic number.

20022734 is a deficient number, since it is larger than the sum of its proper divisors (10011370).

20022734 is a wasteful number, since it uses less digits than its factorization.

20022734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011369.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20022734 is about 4474.6769715813. The cubic root of 20022734 is about 271.5445719980.

Adding to 20022734 its reverse (43722002), we get a palindrome (63744736).

The spelling of 20022734 in words is "twenty million, twenty-two thousand, seven hundred thirty-four".