20562434 has 16 divisors (see below), whose sum is σ = 31520448. Its totient is φ = 10057872.

The previous prime is 20562431. The next prime is 20562439. The reversal of 20562434 is 43426502.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20562431) 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, 22739 + ... + 23625.

It is an arithmetic number, because the mean of its divisors is an integer number (1970028).

Almost surely, 2^20562434 is an apocalyptic number.

20562434 is a deficient number, since it is larger than the sum of its proper divisors (10958014).

20562434 is a wasteful number, since it uses less digits than its factorization.

20562434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 20562434 is about 4534.5820094029. The cubic root of 20562434 is about 273.9627437934.

Adding to 20562434 its reverse (43426502), we get a palindrome (63988936).

The spelling of 20562434 in words is "twenty million, five hundred sixty-two thousand, four hundred thirty-four".