253485428 has 36 divisors (see below), whose sum is σ = 518775012. Its totient is φ = 108057600.

The previous prime is 253485413. The next prime is 253485431. The reversal of 253485428 is 824584352.

It can be written as a sum of positive squares in 2 ways, for example, as 81036004 + 172449424 = 9002^2 + 13132^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34478 + ... + 41178.

It is an arithmetic number, because the mean of its divisors is an integer number (14410417).

Almost surely, 2^253485428 is an apocalyptic number.

253485428 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 253485428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259387506).

253485428 is an abundant number, since it is smaller than the sum of its proper divisors (265289584).

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

253485428 is a wasteful number, since it uses less digits than its factorization.

253485428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6912 (or 6903 counting only the distinct ones).

The product of its digits is 307200, while the sum is 41.

The square root of 253485428 is about 15921.2257065843. The cubic root of 253485428 is about 632.8746002844.

The spelling of 253485428 in words is "two hundred fifty-three million, four hundred eighty-five thousand, four hundred twenty-eight".