20297926 has 16 divisors (see below), whose sum is σ = 33473088. Its totient is φ = 9154600.

The previous prime is 20297903. The next prime is 20297969. The reversal of 20297926 is 62979202.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 640 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (2092068).

Almost surely, 2^20297926 is an apocalyptic number.

20297926 is a deficient number, since it is larger than the sum of its proper divisors (13175162).

20297926 is a wasteful number, since it uses less digits than its factorization.

20297926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7187.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 20297926 is about 4505.3219640776. The cubic root of 20297926 is about 272.7829499324.

The spelling of 20297926 in words is "twenty million, two hundred ninety-seven thousand, nine hundred twenty-six".