345850 has 12 divisors (see below), whose sum is σ = 643374. Its totient is φ = 138320.

The previous prime is 345823. The next prime is 345853. The reversal of 345850 is 58543.

345850 = T₂₈ + T₂₉ + ... + T₁₂₇.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 277729 + 68121 = 527^2 + 261^2 .

It is a super-2 number, since 2×345850² = 239224445000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (345853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3409 + ... + 3508.

2³⁴⁵⁸⁵⁰ is an apocalyptic number.

345850 is a deficient number, since it is larger than the sum of its proper divisors (297524).

345850 is a wasteful number, since it uses less digits than its factorization.

345850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6929 (or 6924 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 345850 is about 588.0901291469. The cubic root of 345850 is about 70.1933430375.

It can be divided in two parts, 3 and 45850, that multiplied together give a triangular number (137550 = T₅₂₄).

The spelling of 345850 in words is "three hundred forty-five thousand, eight hundred fifty".