20267144 has 8 divisors (see below), whose sum is σ = 38000910. Its totient is φ = 10133568.

The previous prime is 20267119. The next prime is 20267197. The reversal of 20267144 is 44176202.

It can be written as a sum of positive squares in only one way, i.e., 18164644 + 2102500 = 4262^2 + 1450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266689 + ... + 1266704.

Almost surely, 2^20267144 is an apocalyptic number.

It is an amenable number.

20267144 is a deficient number, since it is larger than the sum of its proper divisors (17733766).

20267144 is a wasteful number, since it uses less digits than its factorization.

20267144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533399 (or 2533395 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20267144 is about 4501.9044858815. The cubic root of 20267144 is about 272.6449875127.

The spelling of 20267144 in words is "twenty million, two hundred sixty-seven thousand, one hundred forty-four".