20673926 has 32 divisors (see below), whose sum is σ = 39493440. Its totient is φ = 7894656.

The previous prime is 20673907. The next prime is 20673943. The reversal of 20673926 is 62937602.

It is a happy number.

It is a super-2 number, since 2×20673926² = 854822432506952, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3320 + ... + 7236.

It is an arithmetic number, because the mean of its divisors is an integer number (1234170).

Almost surely, 2^20673926 is an apocalyptic number.

20673926 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20673926 is a deficient number, since it is larger than the sum of its proper divisors (18819514).

20673926 is a wasteful number, since it uses less digits than its factorization.

20673926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 20673926 is about 4546.8589157791. The cubic root of 20673926 is about 274.4570045786.

The spelling of 20673926 in words is "twenty million, six hundred seventy-three thousand, nine hundred twenty-six".