20485018 has 8 divisors (see below), whose sum is σ = 30801780. Its totient is φ = 10217760.

The previous prime is 20485009. The next prime is 20485033. The reversal of 20485018 is 81058402.

It can be written as a sum of positive squares in 2 ways, for example, as 19740249 + 744769 = 4443^2 + 863^2 .

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

It is a super-3 number, since 3×20485018³ (a number of 23 digits) contains 333 as substring.

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, 11323 + ... + 13006.

Almost surely, 2^20485018 is an apocalyptic number.

20485018 is a deficient number, since it is larger than the sum of its proper divisors (10316762).

20485018 is a wasteful number, since it uses less digits than its factorization.

20485018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24752.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 20485018 is about 4526.0377815480. The cubic root of 20485018 is about 273.6184951104.

The spelling of 20485018 in words is "twenty million, four hundred eighty-five thousand, eighteen".