354640240 has 40 divisors (see below), whose sum is σ = 825438240. Its totient is φ = 141701376.

The previous prime is 354640199. The next prime is 354640259. The reversal of 354640240 is 42046453.

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

It is a junction number, because it is equal to n+sod(n) for n = 354640199 and 354640208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96517 + ... + 100123.

It is an arithmetic number, because the mean of its divisors is an integer number (20635956).

Almost surely, 2^354640240 is an apocalyptic number.

It is an amenable number.

354640240 is an abundant number, since it is smaller than the sum of its proper divisors (470798000).

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

354640240 is a wasteful number, since it uses less digits than its factorization.

354640240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849 (or 4843 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 354640240 is about 18831.8942223028. The cubic root of 354640240 is about 707.8306062662.

Adding to 354640240 its reverse (42046453), we get a palindrome (396686693).

The spelling of 354640240 in words is "three hundred fifty-four million, six hundred forty thousand, two hundred forty".