20289002 has 4 divisors (see below), whose sum is σ = 30433506. Its totient is φ = 10144500.

The previous prime is 20288999. The next prime is 20289011. The reversal of 20289002 is 20098202.

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

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 8462281 = 3439^2 + 2909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5072249 + ... + 5072252.

Almost surely, 2^20289002 is an apocalyptic number.

20289002 is a deficient number, since it is larger than the sum of its proper divisors (10144504).

20289002 is a wasteful number, since it uses less digits than its factorization.

20289002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10144503.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 20289002 is about 4504.3314709288. The cubic root of 20289002 is about 272.7429676557.

The spelling of 20289002 in words is "twenty million, two hundred eighty-nine thousand, two".