20497246 has 32 divisors (see below), whose sum is σ = 38610432. Its totient is φ = 7928160.

The previous prime is 20497237. The next prime is 20497247. The reversal of 20497246 is 64279402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20497247) 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 15 ways as a sum of consecutive naturals, for example, 25320 + ... + 26116.

It is an arithmetic number, because the mean of its divisors is an integer number (1206576).

Almost surely, 2^20497246 is an apocalyptic number.

20497246 is a deficient number, since it is larger than the sum of its proper divisors (18113186).

20497246 is a wasteful number, since it uses less digits than its factorization.

20497246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 20497246 is about 4527.3884304309. The cubic root of 20497246 is about 273.6729274350.

The spelling of 20497246 in words is "twenty million, four hundred ninety-seven thousand, two hundred forty-six".