201628493748 has 54 divisors (see below), whose sum is σ = 560218024002. Its totient is φ = 61099542240.

The previous prime is 201628493747. The next prime is 201628493771. The reversal of 201628493748 is 847394826102.

201628493748 is a `hidden beast` number, since 2 + 0 + 1 + 628 + 4 + 9 + 3 + 7 + 4 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 201599204004 + 29289744 = 448998^2 + 5412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201628493694 and 201628493703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201628493743) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23139411 + ... + 23148122.

Almost surely, 2^201628493748 is an apocalyptic number.

It is an amenable number.

201628493748 is an abundant number, since it is smaller than the sum of its proper divisors (358589530254).

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

201628493748 is a wasteful number, since it uses less digits than its factorization.

201628493748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46287565 (or 46287549 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 201628493748 in words is "two hundred one billion, six hundred twenty-eight million, four hundred ninety-three thousand, seven hundred forty-eight".