20354990328 has 96 divisors (see below), whose sum is σ = 55616006160. Its totient is φ = 6725214720.

The previous prime is 20354990311. The next prime is 20354990353. The reversal of 20354990328 is 82309945302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3983151 + ... + 3988257.

Almost surely, 2^20354990328 is an apocalyptic number.

It is an amenable number.

20354990328 is an abundant number, since it is smaller than the sum of its proper divisors (35261015832).

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

20354990328 is a wasteful number, since it uses less digits than its factorization.

20354990328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597 (or 5590 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 20354990328 in words is "twenty billion, three hundred fifty-four million, nine hundred ninety thousand, three hundred twenty-eight".