20596490 has 8 divisors (see below), whose sum is σ = 37073700. Its totient is φ = 8238592.

The previous prime is 20596483. The next prime is 20596507. The reversal of 20596490 is 9469502.

It can be written as a sum of positive squares in 2 ways, for example, as 19280881 + 1315609 = 4391^2 + 1147^2 .

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

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 20596490.

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 3 ways as a sum of consecutive naturals, for example, 1029815 + ... + 1029834.

Almost surely, 2^20596490 is an apocalyptic number.

20596490 is a deficient number, since it is larger than the sum of its proper divisors (16477210).

20596490 is a wasteful number, since it uses less digits than its factorization.

20596490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059656.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 20596490 is about 4538.3355979918. The cubic root of 20596490 is about 274.1139082751.

The spelling of 20596490 in words is "twenty million, five hundred ninety-six thousand, four hundred ninety".