263378 has 16 divisors (see below), whose sum is σ = 432000. Its totient is φ = 119952.

The previous prime is 263369. The next prime is 263383. The reversal of 263378 is 873362.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 263378.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2²⁶³³⁷⁸ is an apocalyptic number.

263378 is a deficient number, since it is larger than the sum of its proper divisors (168622).

263378 is a wasteful number, since it uses less digits than its factorization.

263378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289.

The product of its digits is 6048, while the sum is 29.

The square root of 263378 is about 513.2036632761. The cubic root of 263378 is about 64.1002660127.

It can be divided in two parts, 2 and 63378, that multiplied together give a triangular number (126756 = T₅₀₃).

The spelling of 263378 in words is "two hundred sixty-three thousand, three hundred seventy-eight".