355681332 has 18 divisors (see below), whose sum is σ = 899083458. Its totient is φ = 118560432.

The previous prime is 355681309. The next prime is 355681343. The reversal of 355681332 is 233186553.

It can be written as a sum of positive squares in only one way, i.e., 353590416 + 2090916 = 18804^2 + 1446^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 9880037 = 355681332 / (3 + 5 + 5 + 6 + 8 + 1 + 3 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4939983 + ... + 4940054.

It is an arithmetic number, because the mean of its divisors is an integer number (49949081).

Almost surely, 2^355681332 is an apocalyptic number.

It is an amenable number.

355681332 is an abundant number, since it is smaller than the sum of its proper divisors (543402126).

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

355681332 is a wasteful number, since it uses less digits than its factorization.

355681332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9880047 (or 9880042 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 355681332 is about 18859.5156883733. The cubic root of 355681332 is about 708.5225721588.

The spelling of 355681332 in words is "three hundred fifty-five million, six hundred eighty-one thousand, three hundred thirty-two".