20084590 has 32 divisors (see below), whose sum is σ = 37914624. Its totient is φ = 7650720.

The previous prime is 20084579. The next prime is 20084591. The reversal of 20084590 is 9548002.

20084590 = T₁₆₅ + T₁₆₆ + ... + T₄₉₉.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20084591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20287 + ... + 21253.

It is an arithmetic number, because the mean of its divisors is an integer number (1184832).

Almost surely, 2^20084590 is an apocalyptic number.

20084590 is a deficient number, since it is larger than the sum of its proper divisors (17830034).

20084590 is a wasteful number, since it uses less digits than its factorization.

20084590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 20084590 is about 4481.5834255317. The cubic root of 20084590 is about 271.8239110415.

The spelling of 20084590 in words is "twenty million, eighty-four thousand, five hundred ninety".