20733534 has 48 divisors (see below), whose sum is σ = 47702304. Its totient is φ = 6494400.

The previous prime is 20733527. The next prime is 20733539. The reversal of 20733534 is 43533702.

It is a junction number, because it is equal to n+sod(n) for n = 20733498 and 20733507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20733539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24844 + ... + 25664.

It is an arithmetic number, because the mean of its divisors is an integer number (993798).

Almost surely, 2^20733534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20733534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23851152).

20733534 is an abundant number, since it is smaller than the sum of its proper divisors (26968770).

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

20733534 is a wasteful number, since it uses less digits than its factorization.

20733534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 27.

The square root of 20733534 is about 4553.4090525671. The cubic root of 20733534 is about 274.7205270969.

The spelling of 20733534 in words is "twenty million, seven hundred thirty-three thousand, five hundred thirty-four".