20773935 has 128 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 8211456.

The previous prime is 20773931. The next prime is 20773939. The reversal of 20773935 is 53937702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20773931) and next prime (20773939).

It is not a de Polignac number, because 20773935 - 2² = 20773931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20773935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20773931) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 233371 + ... + 233459.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^20773935 is an apocalyptic number.

20773935 is an abundant number, since it is smaller than the sum of its proper divisors (27610065).

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

20773935 is a wasteful number, since it uses less digits than its factorization.

20773935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 20773935 is about 4557.8432399546. The cubic root of 20773935 is about 274.8988498520.

The spelling of 20773935 in words is "twenty million, seven hundred seventy-three thousand, nine hundred thirty-five".