340023638 has 16 divisors (see below), whose sum is σ = 519259920. Its totient is φ = 166946400.

The previous prime is 340023631. The next prime is 340023643. The reversal of 340023638 is 836320043.

It is a self number, because there is not a number n which added to its sum of digits gives 340023638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340023631) 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, 84533 + ... + 88463.

It is an arithmetic number, because the mean of its divisors is an integer number (32453745).

Almost surely, 2^340023638 is an apocalyptic number.

340023638 is a deficient number, since it is larger than the sum of its proper divisors (179236282).

340023638 is a wasteful number, since it uses less digits than its factorization.

340023638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 340023638 is about 18439.7298787157. The cubic root of 340023638 is about 697.9693790394.

The spelling of 340023638 in words is "three hundred forty million, twenty-three thousand, six hundred thirty-eight".