20047552 has 56 divisors (see below), whose sum is σ = 46162976. Its totient is φ = 8460288.

The previous prime is 20047543. The next prime is 20047561. The reversal of 20047552 is 25574002.

It is an interprime number because it is at equal distance from previous prime (20047543) and next prime (20047561).

It is a tau number, because it is divible by the number of its divisors (56).

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 7 ways as a sum of consecutive naturals, for example, 32398 + ... + 33010.

Almost surely, 2^20047552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20047552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23081488).

20047552 is an abundant number, since it is smaller than the sum of its proper divisors (26115424).

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

20047552 is an equidigital number, since it uses as much as digits as its factorization.

20047552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 20047552 is about 4477.4492738612. The cubic root of 20047552 is about 271.6567180335.

The spelling of 20047552 in words is "twenty million, forty-seven thousand, five hundred fifty-two".