20496290 has 8 divisors (see below), whose sum is σ = 36893340. Its totient is φ = 8198512.

The previous prime is 20496263. The next prime is 20496293. The reversal of 20496290 is 9269402.

It can be written as a sum of positive squares in 2 ways, for example, as 18003049 + 2493241 = 4243^2 + 1579^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20496293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024805 + ... + 1024824.

Almost surely, 2^20496290 is an apocalyptic number.

20496290 is a deficient number, since it is larger than the sum of its proper divisors (16397050).

20496290 is a wasteful number, since it uses less digits than its factorization.

20496290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049636.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20496290 is about 4527.2828495688. The cubic root of 20496290 is about 273.6686726295.

The spelling of 20496290 in words is "twenty million, four hundred ninety-six thousand, two hundred ninety".