355890 has 16 divisors (see below), whose sum is σ = 854208. Its totient is φ = 94896.

The previous prime is 355867. The next prime is 355891. The reversal of 355890 is 98553.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 11863 = 355890 / (3 + 5 + 5 + 8 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (355891) by changing a digit.

355890 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5902 + ... + 5961.

It is an arithmetic number, because the mean of its divisors is an integer number (53388).

2³⁵⁵⁸⁹⁰ is an apocalyptic number.

355890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

355890 is an abundant number, since it is smaller than the sum of its proper divisors (498318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

355890 is a wasteful number, since it uses less digits than its factorization.

355890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11873.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 355890 is about 596.5651682759. The cubic root of 355890 is about 70.8661101672.

The spelling of 355890 in words is "three hundred fifty-five thousand, eight hundred ninety".