340492138 has 32 divisors (see below), whose sum is σ = 610283520. Its totient is φ = 139304880.

The previous prime is 340492121. The next prime is 340492153. The reversal of 340492138 is 831294043.

It is a super-2 number, since 2×340492138² = 231869792079622088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275983 + ... + 277213.

It is an arithmetic number, because the mean of its divisors is an integer number (19071360).

Almost surely, 2^340492138 is an apocalyptic number.

340492138 is a deficient number, since it is larger than the sum of its proper divisors (269791382).

340492138 is a wasteful number, since it uses less digits than its factorization.

340492138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 340492138 is about 18452.4290541923. The cubic root of 340492138 is about 698.2897965515.

The spelling of 340492138 in words is "three hundred forty million, four hundred ninety-two thousand, one hundred thirty-eight".