20802148 has 24 divisors (see below), whose sum is σ = 37376640. Its totient is φ = 10127040.

The previous prime is 20802139. The next prime is 20802151. The reversal of 20802148 is 84120802.

It is a super-2 number, since 2×20802148² = 865458722827808, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24865 + ... + 25687.

It is an arithmetic number, because the mean of its divisors is an integer number (1557360).

Almost surely, 2^20802148 is an apocalyptic number.

It is an amenable number.

20802148 is a deficient number, since it is larger than the sum of its proper divisors (16574492).

20802148 is a wasteful number, since it uses less digits than its factorization.

20802148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 20802148 is about 4560.9371843953. The cubic root of 20802148 is about 275.0232399092.

The spelling of 20802148 in words is "twenty million, eight hundred two thousand, one hundred forty-eight".