20089730 has 8 divisors (see below), whose sum is σ = 36161532. Its totient is φ = 8035888.

The previous prime is 20089711. The next prime is 20089747. The reversal of 20089730 is 3798002.

It can be written as a sum of positive squares in 2 ways, for example, as 19598329 + 491401 = 4427^2 + 701^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20089693 and 20089702.

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, 1004477 + ... + 1004496.

Almost surely, 2^20089730 is an apocalyptic number.

20089730 is a deficient number, since it is larger than the sum of its proper divisors (16071802).

20089730 is a wasteful number, since it uses less digits than its factorization.

20089730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008980.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20089730 is about 4482.1568468763. The cubic root of 20089730 is about 271.8470972377.

The spelling of 20089730 in words is "twenty million, eighty-nine thousand, seven hundred thirty".