20249471232 has 90 divisors (see below), whose sum is σ = 60380321078. Its totient is φ = 6749816832.

The previous prime is 20249471191. The next prime is 20249471233. The reversal of 20249471232 is 23217494202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20077756416 + 171714816 = 141696^2 + 13104^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20249471233) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 467533 + ... + 509004.

Almost surely, 2^20249471232 is an apocalyptic number.

It is an amenable number.

20249471232 is an abundant number, since it is smaller than the sum of its proper divisors (40130849846).

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

20249471232 is an frugal number, since it uses more digits than its factorization.

20249471232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976565 (or 976542 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 20249471232 in words is "twenty billion, two hundred forty-nine million, four hundred seventy-one thousand, two hundred thirty-two".