878248738 has 4 divisors (see below), whose sum is σ = 1317373110. Its totient is φ = 439124368.

The previous prime is 878248733. The next prime is 878248739. The reversal of 878248738 is 837842878.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 803892609 + 74356129 = 28353^2 + 8623^2 .

It is not an unprimeable number, because it can be changed into a prime (878248733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219562183 + ... + 219562186.

Almost surely, 2^878248738 is an apocalyptic number.

878248738 is a deficient number, since it is larger than the sum of its proper divisors (439124372).

878248738 is a wasteful number, since it uses less digits than its factorization.

878248738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439124371.

The product of its digits is 4816896, while the sum is 55.

The square root of 878248738 is about 29635.2617332798. The cubic root of 878248738 is about 957.6478650541.

The spelling of 878248738 in words is "eight hundred seventy-eight million, two hundred forty-eight thousand, seven hundred thirty-eight".