20552918 has 8 divisors (see below), whose sum is σ = 31072512. Its totient is φ = 10195416.

The previous prime is 20552899. The next prime is 20552941. The reversal of 20552918 is 81925502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40205 + ... + 40712.

It is an arithmetic number, because the mean of its divisors is an integer number (3884064).

Almost surely, 2^20552918 is an apocalyptic number.

20552918 is a deficient number, since it is larger than the sum of its proper divisors (10519594).

20552918 is a wasteful number, since it uses less digits than its factorization.

20552918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81046.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 20552918 is about 4533.5326181687. The cubic root of 20552918 is about 273.9204752607.

The spelling of 20552918 in words is "twenty million, five hundred fifty-two thousand, nine hundred eighteen".