253720064 has 40 divisors (see below), whose sum is σ = 545954640. Its totient is φ = 117098496.

The previous prime is 253720037. The next prime is 253720069. The reversal of 253720064 is 460027352.

253720064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253720069) 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, 12404 + ... + 25715.

It is an arithmetic number, because the mean of its divisors is an integer number (13648866).

Almost surely, 2^253720064 is an apocalyptic number.

It is an amenable number.

253720064 is an abundant number, since it is smaller than the sum of its proper divisors (292234576).

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

253720064 is an equidigital number, since it uses as much as digits as its factorization.

253720064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38150 (or 38134 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 253720064 is about 15928.5926559756. The cubic root of 253720064 is about 633.0698112041.

The spelling of 253720064 in words is "two hundred fifty-three million, seven hundred twenty thousand, sixty-four".