253826 has 4 divisors (see below), whose sum is σ = 380742. Its totient is φ = 126912.

The previous prime is 253823. The next prime is 253853. The reversal of 253826 is 628352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 160801 + 93025 = 401^2 + 305^2 .

It is a junction number, because it is equal to n+sod(n) for n = 253795 and 253804.

It is not an unprimeable number, because it can be changed into a prime (253823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63455 + ... + 63458.

2²⁵³⁸²⁶ is an apocalyptic number.

253826 is a deficient number, since it is larger than the sum of its proper divisors (126916).

253826 is a wasteful number, since it uses less digits than its factorization.

253826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126915.

The product of its digits is 2880, while the sum is 26.

The square root of 253826 is about 503.8114726760. The cubic root of 253826 is about 63.3157907708.

The spelling of 253826 in words is "two hundred fifty-three thousand, eight hundred twenty-six".