20147832 has 64 divisors (see below), whose sum is σ = 57501600. Its totient is φ = 6531840.

The previous prime is 20147821. The next prime is 20147833. The reversal of 20147832 is 23874102.

20147832 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20147796 and 20147805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20147833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6732 + ... + 9252.

Almost surely, 2^20147832 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 20147832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28750800).

20147832 is an abundant number, since it is smaller than the sum of its proper divisors (37353768).

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

20147832 is a wasteful number, since it uses less digits than its factorization.

20147832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2563 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20147832 is about 4488.6336451085. The cubic root of 20147832 is about 272.1089168766.

The spelling of 20147832 in words is "twenty million, one hundred forty-seven thousand, eight hundred thirty-two".