20766954 has 32 divisors (see below), whose sum is σ = 44904384. Its totient is φ = 6364800.

The previous prime is 20766947. The next prime is 20766959. The reversal of 20766954 is 45966702.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (20766959) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 34254 + ... + 34854.

It is an arithmetic number, because the mean of its divisors is an integer number (1403262).

Almost surely, 2^20766954 is an apocalyptic number.

20766954 is an abundant number, since it is smaller than the sum of its proper divisors (24137430).

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

20766954 is a wasteful number, since it uses less digits than its factorization.

20766954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 20766954 is about 4557.0773528655. The cubic root of 20766954 is about 274.8680535059.

It can be divided in two parts, 207 and 66954, that added together give a triangular number (67161 = T₃₆₆).

The spelling of 20766954 in words is "twenty million, seven hundred sixty-six thousand, nine hundred fifty-four".