20147024 has 40 divisors (see below), whose sum is σ = 40711680. Its totient is φ = 9648000.

The previous prime is 20147021. The next prime is 20147033. The reversal of 20147024 is 42074102.

It is a junction number, because it is equal to n+sod(n) for n = 20146987 and 20147005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20147021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74762 + ... + 75030.

It is an arithmetic number, because the mean of its divisors is an integer number (1017792).

Almost surely, 2^20147024 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 20147024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20355840).

20147024 is an abundant number, since it is smaller than the sum of its proper divisors (20564656).

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

20147024 is a wasteful number, since it uses less digits than its factorization.

20147024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 20147024 is about 4488.5436390883. The cubic root of 20147024 is about 272.1052793149.

The spelling of 20147024 in words is "twenty million, one hundred forty-seven thousand, twenty-four".