20485612 has 24 divisors (see below), whose sum is σ = 43382304. Its totient is φ = 8262912.

The previous prime is 20485607. The next prime is 20485627. The reversal of 20485612 is 21658402.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21043 + ... + 21994.

It is an arithmetic number, because the mean of its divisors is an integer number (1807596).

Almost surely, 2^20485612 is an apocalyptic number.

It is an amenable number.

20485612 is an abundant number, since it is smaller than the sum of its proper divisors (22896692).

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

20485612 is a wasteful number, since it uses less digits than its factorization.

20485612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43065 (or 43063 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20485612 is about 4526.1034013818. The cubic root of 20485612 is about 273.6211397719.

The spelling of 20485612 in words is "twenty million, four hundred eighty-five thousand, six hundred twelve".