351378 has 28 divisors (see below), whose sum is σ = 793518. Its totient is φ = 116640.

The previous prime is 351361. The next prime is 351383. The reversal of 351378 is 873153.

It can be written as a sum of positive squares in only one way, i.e., 263169 + 88209 = 513^2 + 297^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is an unprimeable number.

351378 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 13 ways as a sum of consecutive naturals, for example, 1338 + ... + 1578.

2³⁵¹³⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396759).

351378 is an abundant number, since it is smaller than the sum of its proper divisors (442140).

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

351378 is an equidigital number, since it uses as much as digits as its factorization.

351378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 246 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 351378 is about 592.7714568027. The cubic root of 351378 is about 70.5653536130.

It can be divided in two parts, 351 and 378, that added together give a 6-th power (729 = 3⁶).

The spelling of 351378 in words is "three hundred fifty-one thousand, three hundred seventy-eight".