20534768 has 40 divisors (see below), whose sum is σ = 42559776. Its totient is φ = 9574400.

The previous prime is 20534753. The next prime is 20534783. The reversal of 20534768 is 86743502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20534753) and next prime (20534783).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14408 + ... + 15768.

Almost surely, 2^20534768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20534768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21279888).

20534768 is an abundant number, since it is smaller than the sum of its proper divisors (22025008).

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

20534768 is a wasteful number, since it uses less digits than its factorization.

20534768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1427 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 20534768 is about 4531.5304258054. The cubic root of 20534768 is about 273.8398197092.

The spelling of 20534768 in words is "twenty million, five hundred thirty-four thousand, seven hundred sixty-eight".