20773572 has 24 divisors (see below), whose sum is σ = 49058016. Its totient is φ = 6840768.

The previous prime is 20773559. The next prime is 20773573. The reversal of 20773572 is 27537702.

It is not an unprimeable number, because it can be changed into a prime (20773573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9433 + ... + 11424.

It is an arithmetic number, because the mean of its divisors is an integer number (2044084).

Almost surely, 2^20773572 is an apocalyptic number.

It is an amenable number.

20773572 is an abundant number, since it is smaller than the sum of its proper divisors (28284444).

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

20773572 is a wasteful number, since it uses less digits than its factorization.

20773572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20947 (or 20945 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 33.

The square root of 20773572 is about 4557.8034183146. The cubic root of 20773572 is about 274.8972486650.

The spelling of 20773572 in words is "twenty million, seven hundred seventy-three thousand, five hundred seventy-two".