20234566 has 16 divisors (see below), whose sum is σ = 33920208. Its totient is φ = 8972800.

The previous prime is 20234561. The next prime is 20234569. The reversal of 20234566 is 66543202.

It is a happy number.

It is a super-2 number, since 2×20234566² = 818875322416712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10315 + ... + 12118.

It is an arithmetic number, because the mean of its divisors is an integer number (2120013).

Almost surely, 2^20234566 is an apocalyptic number.

20234566 is a deficient number, since it is larger than the sum of its proper divisors (13685642).

20234566 is a wasteful number, since it uses less digits than its factorization.

20234566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22487.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 20234566 is about 4498.2847842261. The cubic root of 20234566 is about 272.4988233263.

Adding to 20234566 its reverse (66543202), we get a palindrome (86777768).

The spelling of 20234566 in words is "twenty million, two hundred thirty-four thousand, five hundred sixty-six".