20018296 has 8 divisors (see below), whose sum is σ = 37534320. Its totient is φ = 10009144.

The previous prime is 20018293. The next prime is 20018351. The reversal of 20018296 is 69281002.

It is a happy number.

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

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20018293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251136 + ... + 1251151.

It is an arithmetic number, because the mean of its divisors is an integer number (4691790).

Almost surely, 2^20018296 is an apocalyptic number.

It is an amenable number.

20018296 is a deficient number, since it is larger than the sum of its proper divisors (17516024).

20018296 is a wasteful number, since it uses less digits than its factorization.

20018296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502293 (or 2502289 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20018296 is about 4474.1810423808. The cubic root of 20018296 is about 271.5245080737.

Adding to 20018296 its reverse (69281002), we get a palindrome (89299298).

It can be divided in two parts, 200 and 18296, that added together give a square (18496 = 136²).

The spelling of 20018296 in words is "twenty million, eighteen thousand, two hundred ninety-six".