20337090 has 32 divisors (see below), whose sum is σ = 49170240. Its totient is φ = 5383104.

The previous prime is 20337089. The next prime is 20337101. The reversal of 20337090 is 9073302.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20337090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1732 + ... + 6608.

It is an arithmetic number, because the mean of its divisors is an integer number (1536570).

Almost surely, 2^20337090 is an apocalyptic number.

20337090 is an abundant number, since it is smaller than the sum of its proper divisors (28833150).

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

20337090 is a wasteful number, since it uses less digits than its factorization.

20337090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 20337090 is about 4509.6662847710. Note that the first 3 decimals coincide. The cubic root of 20337090 is about 272.9582783187.

The spelling of 20337090 in words is "twenty million, three hundred thirty-seven thousand, ninety".