20144534 has 8 divisors (see below), whose sum is σ = 30510480. Its totient is φ = 9974376.

The previous prime is 20144521. The next prime is 20144549. The reversal of 20144534 is 43544102.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48689 + ... + 49100.

It is an arithmetic number, because the mean of its divisors is an integer number (3813810).

Almost surely, 2^20144534 is an apocalyptic number.

20144534 is a deficient number, since it is larger than the sum of its proper divisors (10365946).

20144534 is a wasteful number, since it uses less digits than its factorization.

20144534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97894.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20144534 is about 4488.2662576991. The cubic root of 20144534 is about 272.0940688907.

Adding to 20144534 its reverse (43544102), we get a palindrome (63688636).

The spelling of 20144534 in words is "twenty million, one hundred forty-four thousand, five hundred thirty-four".