248638 has 16 divisors (see below), whose sum is σ = 410256. Its totient is φ = 112320.

The previous prime is 248627. The next prime is 248639. The reversal of 248638 is 836842.

248638 = 42² + 43² + ... + 93².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1833 + ... + 1963.

It is an arithmetic number, because the mean of its divisors is an integer number (25641).

2²⁴⁸⁶³⁸ is an apocalyptic number.

248638 is a deficient number, since it is larger than the sum of its proper divisors (161618).

248638 is a wasteful number, since it uses less digits than its factorization.

248638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219.

The product of its digits is 9216, while the sum is 31.

The square root of 248638 is about 498.6361398856. The cubic root of 248638 is about 62.8814432804.

The spelling of 248638 in words is "two hundred forty-eight thousand, six hundred thirty-eight".