20732634 has 48 divisors (see below), whose sum is σ = 49578984. Its totient is φ = 6220800.

The previous prime is 20732627. The next prime is 20732689. The reversal of 20732634 is 43623702.

20732634 is a `hidden beast` number, since 20 + 7 + 3 + 2 + 634 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9941409 + 10791225 = 3153^2 + 3285^2 .

It is a super-2 number, since 2×20732634² = 859684225155912, which contains 22 as substring.

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

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 20732598 and 20732607.

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, 8514 + ... + 10674.

Almost surely, 2^20732634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20732634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24789492).

20732634 is an abundant number, since it is smaller than the sum of its proper divisors (28846350).

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

20732634 is a wasteful number, since it uses less digits than its factorization.

20732634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2220 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 20732634 is about 4553.3102244411. The cubic root of 20732634 is about 274.7165520220.

The spelling of 20732634 in words is "twenty million, seven hundred thirty-two thousand, six hundred thirty-four".