20472576 has 144 divisors (see below), whose sum is σ = 60829440. Its totient is φ = 6082560.

The previous prime is 20472559. The next prime is 20472583. The reversal of 20472576 is 67527402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335586 + ... + 335646.

Almost surely, 2^20472576 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 20472576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30414720).

20472576 is an abundant number, since it is smaller than the sum of its proper divisors (40356864).

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

20472576 is a wasteful number, since it uses less digits than its factorization.

20472576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 20472576 is about 4524.6630813797. The cubic root of 20472576 is about 273.5630879378.

Adding to 20472576 its reverse (67527402), we get a palindrome (87999978).

The spelling of 20472576 in words is "twenty million, four hundred seventy-two thousand, five hundred seventy-six".