378247 has 4 divisors (see below), whose sum is σ = 391320. Its totient is φ = 365176.

The previous prime is 378241. The next prime is 378253. The reversal of 378247 is 742873.

378247 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742873 = 71 ⋅10463.

It is an interprime number because it is at equal distance from previous prime (378241) and next prime (378253).

It is a cyclic number.

It is not a de Polignac number, because 378247 - 2³ = 378239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6493 + ... + 6550.

It is an arithmetic number, because the mean of its divisors is an integer number (97830).

2³⁷⁸²⁴⁷ is an apocalyptic number.

378247 is a deficient number, since it is larger than the sum of its proper divisors (13073).

378247 is a wasteful number, since it uses less digits than its factorization.

378247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13072.

The product of its digits is 9408, while the sum is 31.

The square root of 378247 is about 615.0178859188. The cubic root of 378247 is about 72.3200133094.

It can be divided in two parts, 378 and 247, that added together give a 4-th power (625 = 5⁴).

The spelling of 378247 in words is "three hundred seventy-eight thousand, two hundred forty-seven".