1253408 has 48 divisors (see below), whose sum is σ = 2794176. Its totient is φ = 549120.

The previous prime is 1253401. The next prime is 1253437. The reversal of 1253408 is 8043521.

It is a super-2 number, since 2×1253408² = 3142063228928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (1253401) 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, 9503 + ... + 9633.

It is an arithmetic number, because the mean of its divisors is an integer number (58212).

2^1253408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1397088).

1253408 is an abundant number, since it is smaller than the sum of its proper divisors (1540768).

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

1253408 is a wasteful number, since it uses less digits than its factorization.

1253408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1253408 is about 1119.5570552678. The cubic root of 1253408 is about 107.8195431792.

Adding to 1253408 its reverse (8043521), we get a palindrome (9296929).

It can be divided in two parts, 1253 and 408, that added together give a palindrome (1661).

The spelling of 1253408 in words is "one million, two hundred fifty-three thousand, four hundred eight".