20740926 has 8 divisors (see below), whose sum is σ = 41481864. Its totient is φ = 6913640.

The previous prime is 20740903. The next prime is 20740927. The reversal of 20740926 is 62904702.

It is a happy number.

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

20740926 is an admirable number.

It is a super-2 number, since 2×20740926² = 860372022674952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20740893 and 20740902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20740927) 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, 1728405 + ... + 1728416.

It is an arithmetic number, because the mean of its divisors is an integer number (5185233).

Almost surely, 2^20740926 is an apocalyptic number.

20740926 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20740926 is a wasteful number, since it uses less digits than its factorization.

20740926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456826.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20740926 is about 4554.2206797651. The cubic root of 20740926 is about 274.7531713606.

The spelling of 20740926 in words is "twenty million, seven hundred forty thousand, nine hundred twenty-six".