340857256 has 8 divisors (see below), whose sum is σ = 639107370. Its totient is φ = 170428624.

The previous prime is 340857241. The next prime is 340857277. The reversal of 340857256 is 652758043.

340857256 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 251856900 + 89000356 = 15870^2 + 9434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21303571 + ... + 21303586.

Almost surely, 2^340857256 is an apocalyptic number.

It is an amenable number.

340857256 is a deficient number, since it is larger than the sum of its proper divisors (298250114).

340857256 is a wasteful number, since it uses less digits than its factorization.

340857256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42607163 (or 42607159 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 340857256 is about 18462.3198975643. The cubic root of 340857256 is about 698.5393050983.

The spelling of 340857256 in words is "three hundred forty million, eight hundred fifty-seven thousand, two hundred fifty-six".