354289840 has 40 divisors (see below), whose sum is σ = 831442320. Its totient is φ = 140388096.

The previous prime is 354289829. The next prime is 354289841. The reversal of 354289840 is 48982453.

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 (354289841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12135 + ... + 29254.

It is an arithmetic number, because the mean of its divisors is an integer number (20786058).

Almost surely, 2^354289840 is an apocalyptic number.

It is an amenable number.

354289840 is an abundant number, since it is smaller than the sum of its proper divisors (477152480).

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

354289840 is a wasteful number, since it uses less digits than its factorization.

354289840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41509 (or 41503 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 354289840 is about 18822.5885573690. The cubic root of 354289840 is about 707.5974069585.

The spelling of 354289840 in words is "three hundred fifty-four million, two hundred eighty-nine thousand, eight hundred forty".