69678828 has 36 divisors (see below), whose sum is σ = 177788520. Its totient is φ = 23007936.

The previous prime is 69678827. The next prime is 69678839. The reversal of 69678828 is 82887696.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (69678827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5193 + ... + 12896.

It is an arithmetic number, because the mean of its divisors is an integer number (4938570).

Almost surely, 2^69678828 is an apocalyptic number.

It is an amenable number.

69678828 is an abundant number, since it is smaller than the sum of its proper divisors (108109692).

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

69678828 is a wasteful number, since it uses less digits than its factorization.

69678828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18206 (or 18201 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 69678828 is about 8347.3845005487. The cubic root of 69678828 is about 411.4972580843.

It can be divided in two parts, 696 and 78828, that added together give a square (79524 = 282²).

The spelling of 69678828 in words is "sixty-nine million, six hundred seventy-eight thousand, eight hundred twenty-eight".