20825632 has 24 divisors (see below), whose sum is σ = 41149836. Its totient is φ = 10374912.

The previous prime is 20825621. The next prime is 20825633. The reversal of 20825632 is 23652802.

It can be written as a sum of positive squares in 2 ways, for example, as 19395216 + 1430416 = 4404^2 + 1196^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20825632.

It is not an unprimeable number, because it can be changed into a prime (20825633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9118 + ... + 11170.

Almost surely, 2^20825632 is an apocalyptic number.

It is an amenable number.

20825632 is a deficient number, since it is larger than the sum of its proper divisors (20324204).

20825632 is a wasteful number, since it uses less digits than its factorization.

20825632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20825632 is about 4563.5109290983. The cubic root of 20825632 is about 275.1266942393.

The spelling of 20825632 in words is "twenty million, eight hundred twenty-five thousand, six hundred thirty-two".