20047632 has 80 divisors (see below), whose sum is σ = 57877248. Its totient is φ = 5927040.

The previous prime is 20047609. The next prime is 20047633. The reversal of 20047632 is 23674002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20047633) by changing a digit.

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, 22263 + ... + 23145.

Almost surely, 2^20047632 is an apocalyptic number.

20047632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20047632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28938624).

20047632 is an abundant number, since it is smaller than the sum of its proper divisors (37829616).

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

20047632 is a wasteful number, since it uses less digits than its factorization.

20047632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20047632 is about 4477.4582075101. The cubic root of 20047632 is about 271.6570793828.

The spelling of 20047632 in words is "twenty million, forty-seven thousand, six hundred thirty-two".