20285748 has 48 divisors (see below), whose sum is σ = 60108160. Its totient is φ = 5795712.

The previous prime is 20285737. The next prime is 20285753. The reversal of 20285748 is 84758202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12661 + ... + 14172.

Almost surely, 2^20285748 is an apocalyptic number.

20285748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20285748 is an abundant number, since it is smaller than the sum of its proper divisors (39822412).

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

20285748 is a wasteful number, since it uses less digits than its factorization.

20285748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26853 (or 26845 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 20285748 is about 4503.9702485696. The cubic root of 20285748 is about 272.7283858136.

It can be divided in two parts, 2028 and 5748, that added together give a 5-th power (7776 = 6⁵).

The spelling of 20285748 in words is "twenty million, two hundred eighty-five thousand, seven hundred forty-eight".