355640424 has 16 divisors (see below), whose sum is σ = 889101120. Its totient is φ = 118546800.

The previous prime is 355640419. The next prime is 355640443. The reversal of 355640424 is 424046553.

It is a super-2 number, since 2×355640424² = 252960222365799552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7409152 + ... + 7409199.

It is an arithmetic number, because the mean of its divisors is an integer number (55568820).

Almost surely, 2^355640424 is an apocalyptic number.

It is an amenable number.

355640424 is an abundant number, since it is smaller than the sum of its proper divisors (533460696).

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

355640424 is a wasteful number, since it uses less digits than its factorization.

355640424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14818360 (or 14818356 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 355640424 is about 18858.4311118396. The cubic root of 355640424 is about 708.4954079999.

Adding to 355640424 its reverse (424046553), we get a palindrome (779686977).

The spelling of 355640424 in words is "three hundred fifty-five million, six hundred forty thousand, four hundred twenty-four".