20544374 has 4 divisors (see below), whose sum is σ = 30816564. Its totient is φ = 10272186.

The previous prime is 20544343. The next prime is 20544389. The reversal of 20544374 is 47344502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5136092 + ... + 5136095.

It is an arithmetic number, because the mean of its divisors is an integer number (7704141).

Almost surely, 2^20544374 is an apocalyptic number.

20544374 is a deficient number, since it is larger than the sum of its proper divisors (10272190).

20544374 is a wasteful number, since it uses less digits than its factorization.

20544374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10272189.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 20544374 is about 4532.5902086997. The cubic root of 20544374 is about 273.8825130775.

Adding to 20544374 its reverse (47344502), we get a palindrome (67888876).

The spelling of 20544374 in words is "twenty million, five hundred forty-four thousand, three hundred seventy-four".