20089470 has 16 divisors (see below), whose sum is σ = 48214800. Its totient is φ = 5357184.

The previous prime is 20089451. The next prime is 20089477. The reversal of 20089470 is 7498002.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 669649 = 20089470 / (2 + 0 + 0 + 8 + 9 + 4 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20089477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334795 + ... + 334854.

It is an arithmetic number, because the mean of its divisors is an integer number (3013425).

Almost surely, 2^20089470 is an apocalyptic number.

20089470 is an abundant number, since it is smaller than the sum of its proper divisors (28125330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20089470 is a wasteful number, since it uses less digits than its factorization.

20089470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669659.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20089470 is about 4482.1278428889. The cubic root of 20089470 is about 271.8459244901.

The spelling of 20089470 in words is "twenty million, eighty-nine thousand, four hundred seventy".