253534428 has 144 divisors (see below), whose sum is σ = 798255360. Its totient is φ = 69255648.

The previous prime is 253534417. The next prime is 253534439. The reversal of 253534428 is 824435352.

253534428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (253534417) and next prime (253534439).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 253534392 and 253534401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120675 + ... + 122757.

It is an arithmetic number, because the mean of its divisors is an integer number (5543440).

Almost surely, 2^253534428 is an apocalyptic number.

253534428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253534428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399127680).

253534428 is an abundant number, since it is smaller than the sum of its proper divisors (544720932).

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

253534428 is a wasteful number, since it uses less digits than its factorization.

253534428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133 (or 2118 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 253534428 is about 15922.7644584727. The cubic root of 253534428 is about 632.9153769314.

It can be divided in two parts, 2535 and 34428, that added together give a palindrome (36963).

The spelling of 253534428 in words is "two hundred fifty-three million, five hundred thirty-four thousand, four hundred twenty-eight".