20722848 has 24 divisors (see below), whose sum is σ = 54397728. Its totient is φ = 6907584.

The previous prime is 20722843. The next prime is 20722853. The reversal of 20722848 is 84822702.

It is an interprime number because it is at equal distance from previous prime (20722843) and next prime (20722853).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×20722848² = 858872858462208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20722843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107836 + ... + 108027.

It is an arithmetic number, because the mean of its divisors is an integer number (2266572).

Almost surely, 2^20722848 is an apocalyptic number.

It is an amenable number.

20722848 is an abundant number, since it is smaller than the sum of its proper divisors (33674880).

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

20722848 is a wasteful number, since it uses less digits than its factorization.

20722848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215876 (or 215868 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 20722848 is about 4552.2354947871. The cubic root of 20722848 is about 274.6733222798.

The spelling of 20722848 in words is "twenty million, seven hundred twenty-two thousand, eight hundred forty-eight".