20802382 has 4 divisors (see below), whose sum is σ = 31203576. Its totient is φ = 10401190.

The previous prime is 20802371. The next prime is 20802391. The reversal of 20802382 is 28320802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28320802 = 2 ⋅14160401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200594 + ... + 5200597.

It is an arithmetic number, because the mean of its divisors is an integer number (7800894).

Almost surely, 2^20802382 is an apocalyptic number.

20802382 is a deficient number, since it is larger than the sum of its proper divisors (10401194).

20802382 is a wasteful number, since it uses less digits than its factorization.

20802382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10401193.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 20802382 is about 4560.9628369457. The cubic root of 20802382 is about 275.0242711360.

The spelling of 20802382 in words is "twenty million, eight hundred two thousand, three hundred eighty-two".