20147724250 has 32 divisors (see below), whose sum is σ = 39935168208. Its totient is φ = 7585024000.

The previous prime is 20147724227. The next prime is 20147724257. The reversal of 20147724250 is 5242774102.

It can be written as a sum of positive squares in 8 ways, for example, as 723448609 + 19424275641 = 26897^2 + 139371^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (20147724257) 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, 2366071 + ... + 2374570.

Almost surely, 2^20147724250 is an apocalyptic number.

20147724250 is a deficient number, since it is larger than the sum of its proper divisors (19787443958).

20147724250 is a wasteful number, since it uses less digits than its factorization.

20147724250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740675 (or 4740665 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 34.

The spelling of 20147724250 in words is "twenty billion, one hundred forty-seven million, seven hundred twenty-four thousand, two hundred fifty".