248631138 has 48 divisors (see below), whose sum is σ = 624114816. Its totient is φ = 70061760.

The previous prime is 248631121. The next prime is 248631143. The reversal of 248631138 is 831136842.

248631138 is a `hidden beast` number, since 2 + 4 + 8 + 631 + 13 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4318 + ... + 22713.

It is an arithmetic number, because the mean of its divisors is an integer number (13002392).

Almost surely, 2^248631138 is an apocalyptic number.

248631138 is an abundant number, since it is smaller than the sum of its proper divisors (375483678).

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

248631138 is a wasteful number, since it uses less digits than its factorization.

248631138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27119 (or 27116 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 248631138 is about 15768.0416666116. The cubic root of 248631138 is about 628.8086480028.

The spelling of 248631138 in words is "two hundred forty-eight million, six hundred thirty-one thousand, one hundred thirty-eight".