20826938 has 32 divisors (see below), whose sum is σ = 36391680. Its totient is φ = 8834560.

The previous prime is 20826931. The next prime is 20826943. The reversal of 20826938 is 83962802.

It is a happy number.

It is a super-2 number, since 2×20826938² = 867522692911688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20826931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87023 + ... + 87261.

It is an arithmetic number, because the mean of its divisors is an integer number (1137240).

Almost surely, 2^20826938 is an apocalyptic number.

20826938 is a deficient number, since it is larger than the sum of its proper divisors (15564742).

20826938 is a wasteful number, since it uses less digits than its factorization.

20826938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20826938 is about 4563.6540184374. The cubic root of 20826938 is about 275.1324452925.

The spelling of 20826938 in words is "twenty million, eight hundred twenty-six thousand, nine hundred thirty-eight".