340402266 has 12 divisors (see below), whose sum is σ = 737538282. Its totient is φ = 113467416.

The previous prime is 340402259. The next prime is 340402267. The reversal of 340402266 is 662204043.

It can be written as a sum of positive squares in only one way, i.e., 306425025 + 33977241 = 17505^2 + 5829^2 .

It is not an unprimeable number, because it can be changed into a prime (340402267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9455601 + ... + 9455636.

Almost surely, 2^340402266 is an apocalyptic number.

340402266 is an abundant number, since it is smaller than the sum of its proper divisors (397136016).

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

340402266 is a wasteful number, since it uses less digits than its factorization.

340402266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18911245 (or 18911242 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 340402266 is about 18449.9936585355. The cubic root of 340402266 is about 698.2283538965.

The spelling of 340402266 in words is "three hundred forty million, four hundred two thousand, two hundred sixty-six".