20534983 has 8 divisors (see below), whose sum is σ = 23592960. Its totient is φ = 17508120.

The previous prime is 20534981. The next prime is 20534999. The reversal of 20534983 is 38943502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20534983 - 2¹ = 20534981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20534981) 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, 6343 + ... + 9016.

It is an arithmetic number, because the mean of its divisors is an integer number (2949120).

Almost surely, 2^20534983 is an apocalyptic number.

20534983 is a deficient number, since it is larger than the sum of its proper divisors (3057977).

20534983 is a wasteful number, since it uses less digits than its factorization.

20534983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15557.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 20534983 is about 4531.5541484131. The cubic root of 20534983 is about 273.8407754112.

The spelling of 20534983 in words is "twenty million, five hundred thirty-four thousand, nine hundred eighty-three".