20728130146 has 8 divisors (see below), whose sum is σ = 31394061504. Its totient is φ = 10263442980.

The previous prime is 20728130119. The next prime is 20728130167. The reversal of 20728130146 is 64103182702.

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, 50310790 + ... + 50311201.

It is an arithmetic number, because the mean of its divisors is an integer number (3924257688).

Almost surely, 2^20728130146 is an apocalyptic number.

20728130146 is a deficient number, since it is larger than the sum of its proper divisors (10665931358).

20728130146 is a wasteful number, since it uses less digits than its factorization.

20728130146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100622096.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 20728130146 in words is "twenty billion, seven hundred twenty-eight million, one hundred thirty thousand, one hundred forty-six".