355402240 has 40 divisors (see below), whose sum is σ = 852138540. Its totient is φ = 142159872.

The previous prime is 355402231. The next prime is 355402241. The reversal of 355402240 is 42204553.

It can be written as a sum of positive squares in 2 ways, for example, as 346257664 + 9144576 = 18608^2 + 3024^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (355402241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66855 + ... + 71974.

Almost surely, 2^355402240 is an apocalyptic number.

It is an amenable number.

355402240 is an abundant number, since it is smaller than the sum of its proper divisors (496736300).

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

355402240 is an equidigital number, since it uses as much as digits as its factorization.

355402240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138852 (or 138836 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 355402240 is about 18852.1150007101. The cubic root of 355402240 is about 708.3372051768.

Adding to 355402240 its reverse (42204553), we get a palindrome (397606793).

The spelling of 355402240 in words is "three hundred fifty-five million, four hundred two thousand, two hundred forty".