340405266 has 8 divisors (see below), whose sum is σ = 680810544. Its totient is φ = 113468420.

The previous prime is 340405253. The next prime is 340405271. The reversal of 340405266 is 662504043.

It is a sphenic number, since it is the product of 3 distinct primes.

340405266 is an admirable number.

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, 28367100 + ... + 28367111.

It is an arithmetic number, because the mean of its divisors is an integer number (85101318).

Almost surely, 2^340405266 is an apocalyptic number.

340405266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

340405266 is a wasteful number, since it uses less digits than its factorization.

340405266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56734216.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 340405266 is about 18450.0749591973. The cubic root of 340405266 is about 698.2304050765.

The spelling of 340405266 in words is "three hundred forty million, four hundred five thousand, two hundred sixty-six".