20498489402 has 8 divisors (see below), whose sum is σ = 30748547700. Its totient is φ = 10248973504.

The previous prime is 20498489327. The next prime is 20498489461.

20498489402 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 17482392841 + 3016096561 = 132221^2 + 54919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22127 + ... + 203682.

Almost surely, 2^20498489402 is an apocalyptic number.

20498489402 is a deficient number, since it is larger than the sum of its proper divisors (10250058298).

20498489402 is a wasteful number, since it uses less digits than its factorization.

20498489402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271200.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 20498489402 in words is "twenty billion, four hundred ninety-eight million, four hundred eighty-nine thousand, four hundred two".