253381740 has 24 divisors (see below), whose sum is σ = 709469040. Its totient is φ = 67568448.

The previous prime is 253381703. The next prime is 253381741. The reversal of 253381740 is 47183352.

253381740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (253381741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111455 + ... + 2111574.

It is an arithmetic number, because the mean of its divisors is an integer number (29561210).

Almost surely, 2^253381740 is an apocalyptic number.

253381740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253381740 is an abundant number, since it is smaller than the sum of its proper divisors (456087300).

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

253381740 is a wasteful number, since it uses less digits than its factorization.

253381740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223041 (or 4223039 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 253381740 is about 15917.9690915644. The cubic root of 253381740 is about 632.7882962424.

The spelling of 253381740 in words is "two hundred fifty-three million, three hundred eighty-one thousand, seven hundred forty".