128652878 has 4 divisors (see below), whose sum is σ = 192979320. Its totient is φ = 64326438.

The previous prime is 128652877. The next prime is 128652899. The reversal of 128652878 is 878256821.

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 (128652877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32163218 + ... + 32163221.

It is an arithmetic number, because the mean of its divisors is an integer number (48244830).

Almost surely, 2^128652878 is an apocalyptic number.

128652878 is a deficient number, since it is larger than the sum of its proper divisors (64326442).

128652878 is an equidigital number, since it uses as much as digits as its factorization.

128652878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64326441.

The product of its digits is 430080, while the sum is 47.

The square root of 128652878 is about 11342.5252038512. The cubic root of 128652878 is about 504.8238159378.

The spelling of 128652878 in words is "one hundred twenty-eight million, six hundred fifty-two thousand, eight hundred seventy-eight".