20802072 has 32 divisors (see below), whose sum is σ = 52128000. Its totient is φ = 6917664.

The previous prime is 20802049. The next prime is 20802073. The reversal of 20802072 is 27020802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20802073) 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, 13653 + ... + 15099.

It is an arithmetic number, because the mean of its divisors is an integer number (1629000).

Almost surely, 2^20802072 is an apocalyptic number.

It is an amenable number.

20802072 is an abundant number, since it is smaller than the sum of its proper divisors (31325928).

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

20802072 is a wasteful number, since it uses less digits than its factorization.

20802072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20802072 is about 4560.9288527667. The cubic root of 20802072 is about 275.0229049792.

Adding to 20802072 its reverse (27020802), we get a palindrome (47822874).

The spelling of 20802072 in words is "twenty million, eight hundred two thousand, seventy-two".