253838720 has 32 divisors (see below), whose sum is σ = 606834720. Its totient is φ = 101535232.

The previous prime is 253838719. The next prime is 253838723. The reversal of 253838720 is 27838352.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253838723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197672 + ... + 198951.

It is an arithmetic number, because the mean of its divisors is an integer number (18963585).

Almost surely, 2^253838720 is an apocalyptic number.

253838720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253838720 is an abundant number, since it is smaller than the sum of its proper divisors (352996000).

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

253838720 is an equidigital number, since it uses as much as digits as its factorization.

253838720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396642 (or 396630 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 253838720 is about 15932.3168434475. The cubic root of 253838720 is about 633.1684840267.

The spelling of 253838720 in words is "two hundred fifty-three million, eight hundred thirty-eight thousand, seven hundred twenty".