248637878 has 4 divisors (see below), whose sum is σ = 372956820. Its totient is φ = 124318938.

The previous prime is 248637877. The next prime is 248637881. The reversal of 248637878 is 878736842.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248637877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62159468 + ... + 62159471.

It is an arithmetic number, because the mean of its divisors is an integer number (93239205).

Almost surely, 2^248637878 is an apocalyptic number.

248637878 is a deficient number, since it is larger than the sum of its proper divisors (124318942).

248637878 is a wasteful number, since it uses less digits than its factorization.

248637878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124318941.

The product of its digits is 3612672, while the sum is 53.

The square root of 248637878 is about 15768.2553885964. The cubic root of 248637878 is about 628.8143299567.

The spelling of 248637878 in words is "two hundred forty-eight million, six hundred thirty-seven thousand, eight hundred seventy-eight".