20542716 has 36 divisors (see below), whose sum is σ = 52422552. Its totient is φ = 6782304.

The previous prime is 20542673. The next prime is 20542729. The reversal of 20542716 is 61724502.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20542716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1186 + ... + 6518.

It is an arithmetic number, because the mean of its divisors is an integer number (1456182).

Almost surely, 2^20542716 is an apocalyptic number.

It is an amenable number.

20542716 is an abundant number, since it is smaller than the sum of its proper divisors (31879836).

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

20542716 is a wasteful number, since it uses less digits than its factorization.

20542716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20542716 is about 4532.4073073809. The cubic root of 20542716 is about 273.8751451329.

The spelling of 20542716 in words is "twenty million, five hundred forty-two thousand, seven hundred sixteen".