340203890 has 64 divisors (see below), whose sum is σ = 676529280. Its totient is φ = 122411520.

The previous prime is 340203887. The next prime is 340203943. The reversal of 340203890 is 98302043.

It is a super-2 number, since 2×340203890² = 231477373542264200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1210550 + ... + 1210830.

It is an arithmetic number, because the mean of its divisors is an integer number (10570770).

Almost surely, 2^340203890 is an apocalyptic number.

340203890 is a deficient number, since it is larger than the sum of its proper divisors (336325390).

340203890 is a wasteful number, since it uses less digits than its factorization.

340203890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 340203890 is about 18444.6168298504. The cubic root of 340203890 is about 698.0926921836.

The spelling of 340203890 in words is "three hundred forty million, two hundred three thousand, eight hundred ninety".