20726433 has 24 divisors (see below), whose sum is σ = 36848448. Its totient is φ = 10932192.

The previous prime is 20726399. The next prime is 20726437. The reversal of 20726433 is 33462702.

20726433 is a `hidden beast` number, since 207 + 26 + 433 = 666.

It is not a de Polignac number, because 20726433 - 2⁶ = 20726369 is a prime.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 20726397 and 20726406.

It is not an unprimeable number, because it can be changed into a prime (20726437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11835 + ... + 13472.

It is an arithmetic number, because the mean of its divisors is an integer number (1535352).

Almost surely, 2^20726433 is an apocalyptic number.

It is an amenable number.

20726433 is a deficient number, since it is larger than the sum of its proper divisors (16122015).

20726433 is a wasteful number, since it uses less digits than its factorization.

20726433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25333 (or 25330 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 20726433 is about 4552.6292403401. The cubic root of 20726433 is about 274.6891606286.

The spelling of 20726433 in words is "twenty million, seven hundred twenty-six thousand, four hundred thirty-three".