20773668 has 48 divisors (see below), whose sum is σ = 50077440. Its totient is φ = 6699264.

The previous prime is 20773663. The next prime is 20773679. The reversal of 20773668 is 86637702.

It is not an unprimeable number, because it can be changed into a prime (20773661) 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, 56421 + ... + 56787.

It is an arithmetic number, because the mean of its divisors is an integer number (1043280).

Almost surely, 2^20773668 is an apocalyptic number.

It is an amenable number.

20773668 is an abundant number, since it is smaller than the sum of its proper divisors (29303772).

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

20773668 is a wasteful number, since it uses less digits than its factorization.

20773668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 20773668 is about 4557.8139496912. The cubic root of 20773668 is about 274.8976721212.

The spelling of 20773668 in words is "twenty million, seven hundred seventy-three thousand, six hundred sixty-eight".