20934576 has 120 divisors (see below), whose sum is σ = 64589616. Its totient is φ = 6289920.

The previous prime is 20934569. The next prime is 20934581. The reversal of 20934576 is 67543902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20934576.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99111 + ... + 99321.

Almost surely, 2^20934576 is an apocalyptic number.

20934576 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20934576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32294808).

20934576 is an abundant number, since it is smaller than the sum of its proper divisors (43655040).

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

20934576 is a wasteful number, since it uses less digits than its factorization.

20934576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 20934576 is about 4575.4317829031. The cubic root of 20934576 is about 275.6056118838.

The spelling of 20934576 in words is "twenty million, nine hundred thirty-four thousand, five hundred seventy-six".