20902030250 has 32 divisors (see below), whose sum is σ = 39140010000. Its totient is φ = 8358374400.

The previous prime is 20902030231. The next prime is 20902030309. The reversal of 20902030250 is 5203020902.

It can be written as a sum of positive squares in 8 ways, for example, as 212372329 + 20689657921 = 14573^2 + 143839^2 .

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, 1022126 + ... + 1042374.

Almost surely, 2^20902030250 is an apocalyptic number.

20902030250 is a deficient number, since it is larger than the sum of its proper divisors (18237979750).

20902030250 is a wasteful number, since it uses less digits than its factorization.

20902030250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24395 (or 24385 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The spelling of 20902030250 in words is "twenty billion, nine hundred two million, thirty thousand, two hundred fifty".