355378672728 has 384 divisors, whose sum is σ = 1046099059200. Its totient is φ = 111729735936.

The previous prime is 355378672723. The next prime is 355378672751. The reversal of 355378672728 is 827276873553.

355378672728 is a `hidden beast` number, since 3 + 5 + 537 + 8 + 6 + 72 + 7 + 28 = 666.

Its product of digits (118540800) is a multiple of the sum of its prime factors (420).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355378672723) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2180237175 + ... + 2180237337.

It is an arithmetic number, because the mean of its divisors is an integer number (2724216300).

Almost surely, 2^355378672728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 355378672728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523049529600).

355378672728 is an abundant number, since it is smaller than the sum of its proper divisors (690720386472).

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

355378672728 is a wasteful number, since it uses less digits than its factorization.

355378672728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 367 counting only the distinct ones).

The product of its digits is 118540800, while the sum is 63.

The spelling of 355378672728 in words is "three hundred fifty-five billion, three hundred seventy-eight million, six hundred seventy-two thousand, seven hundred twenty-eight".