20822248 has 8 divisors (see below), whose sum is σ = 39041730. Its totient is φ = 10411120.

The previous prime is 20822227. The next prime is 20822257. The reversal of 20822248 is 84222802.

It can be written as a sum of positive squares in only one way, i.e., 20811844 + 10404 = 4562^2 + 102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1301383 + ... + 1301398.

Almost surely, 2^20822248 is an apocalyptic number.

It is an amenable number.

20822248 is a deficient number, since it is larger than the sum of its proper divisors (18219482).

20822248 is a wasteful number, since it uses less digits than its factorization.

20822248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602787 (or 2602783 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 20822248 is about 4563.1401468725. The cubic root of 20822248 is about 275.1117914636. Note that the first 3 decimals are identical.

The spelling of 20822248 in words is "twenty million, eight hundred twenty-two thousand, two hundred forty-eight".