354240520 has 32 divisors (see below), whose sum is σ = 798880320. Its totient is φ = 141369280.

The previous prime is 354240473. The next prime is 354240521. The reversal of 354240520 is 25042453.

It is a super-3 number, since 3×354240520³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (354240521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7725 + ... + 27715.

It is an arithmetic number, because the mean of its divisors is an integer number (24965010).

Almost surely, 2^354240520 is an apocalyptic number.

It is an amenable number.

354240520 is an abundant number, since it is smaller than the sum of its proper divisors (444639800).

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

354240520 is a wasteful number, since it uses less digits than its factorization.

354240520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20445 (or 20441 counting only the distinct ones).

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

The square root of 354240520 is about 18821.2783837868. The cubic root of 354240520 is about 707.5645710148.

Adding to 354240520 its reverse (25042453), we get a palindrome (379282973).

The spelling of 354240520 in words is "three hundred fifty-four million, two hundred forty thousand, five hundred twenty".