253791390 has 32 divisors (see below), whose sum is σ = 609910560. Its totient is φ = 67587584.

The previous prime is 253791367. The next prime is 253791427. The reversal of 253791390 is 93197352.

253791390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19042 + ... + 29498.

It is an arithmetic number, because the mean of its divisors is an integer number (19059705).

Almost surely, 2^253791390 is an apocalyptic number.

253791390 is an abundant number, since it is smaller than the sum of its proper divisors (356119170).

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

253791390 is a wasteful number, since it uses less digits than its factorization.

253791390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11276.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 253791390 is about 15930.8314283969. The cubic root of 253791390 is about 633.1291286871.

The spelling of 253791390 in words is "two hundred fifty-three million, seven hundred ninety-one thousand, three hundred ninety".