18820896 has 24 divisors (see below), whose sum is σ = 49405104. Its totient is φ = 6273600.

The previous prime is 18820891. The next prime is 18820897. The reversal of 18820896 is 69802881.

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

It is a super-2 number, since 2×18820896² = 708452252485632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18820891) 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, 97930 + ... + 98121.

It is an arithmetic number, because the mean of its divisors is an integer number (2058546).

Almost surely, 2^18820896 is an apocalyptic number.

18820896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18820896 is an abundant number, since it is smaller than the sum of its proper divisors (30584208).

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

18820896 is a wasteful number, since it uses less digits than its factorization.

18820896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196064 (or 196056 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 18820896 is about 4338.3056600475. The cubic root of 18820896 is about 265.9990577915. Note that the first 3 decimals are identical.

The spelling of 18820896 in words is "eighteen million, eight hundred twenty thousand, eight hundred ninety-six".