340457638 has 16 divisors (see below), whose sum is σ = 540400896. Its totient is φ = 160532680.

The previous prime is 340457627. The next prime is 340457639. The reversal of 340457638 is 836754043.

340457638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×340457638² = 231822806545078088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340457638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340457639) 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, 48856 + ... + 55387.

It is an arithmetic number, because the mean of its divisors is an integer number (33775056).

Almost surely, 2^340457638 is an apocalyptic number.

340457638 is a deficient number, since it is larger than the sum of its proper divisors (199943258).

340457638 is a wasteful number, since it uses less digits than its factorization.

340457638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104339.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 340457638 is about 18451.4941942380. The cubic root of 340457638 is about 698.2662112672.

The spelling of 340457638 in words is "three hundred forty million, four hundred fifty-seven thousand, six hundred thirty-eight".