263490 has 16 divisors (see below), whose sum is σ = 632448. Its totient is φ = 70256.

The previous prime is 263489. The next prime is 263491. The reversal of 263490 is 94362.

It is an interprime number because it is at equal distance from previous prime (263489) and next prime (263491).

It is a d-powerful number, because it can be written as 2⁵ + 6⁴ + 4⁹ + 3² + 9 + 0 .

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 263490.

It is not an unprimeable number, because it can be changed into a prime (263491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4362 + ... + 4421.

It is an arithmetic number, because the mean of its divisors is an integer number (39528).

2²⁶³⁴⁹⁰ is an apocalyptic number.

263490 is an abundant number, since it is smaller than the sum of its proper divisors (368958).

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

263490 is a wasteful number, since it uses less digits than its factorization.

263490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8793.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 263490 is about 513.3127701509. The cubic root of 263490 is about 64.1093508165.

The spelling of 263490 in words is "two hundred sixty-three thousand, four hundred ninety".