355381380 has 72 divisors (see below), whose sum is σ = 1082233152. Its totient is φ = 94395456.

The previous prime is 355381363. The next prime is 355381387. The reversal of 355381380 is 83183553.

355381380 is a `hidden beast` number, since 35 + 538 + 13 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (355381387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43587 + ... + 51093.

It is an arithmetic number, because the mean of its divisors is an integer number (15031016).

Almost surely, 2^355381380 is an apocalyptic number.

355381380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 355381380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541116576).

355381380 is an abundant number, since it is smaller than the sum of its proper divisors (726851772).

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

355381380 is a wasteful number, since it uses less digits than its factorization.

355381380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785 (or 7780 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 355381380 is about 18851.5617390178. The cubic root of 355381380 is about 708.3233465105.

The spelling of 355381380 in words is "three hundred fifty-five million, three hundred eighty-one thousand, three hundred eighty".