69408128 has 16 divisors (see below), whose sum is σ = 138274260. Its totient is φ = 34704000.

The previous prime is 69408091. The next prime is 69408133. The reversal of 69408128 is 82180496.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 69408091 and 69408100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270998 + ... + 271253.

Almost surely, 2^69408128 is an apocalyptic number.

It is an amenable number.

69408128 is a deficient number, since it is larger than the sum of its proper divisors (68866132).

69408128 is an equidigital number, since it uses as much as digits as its factorization.

69408128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542265 (or 542253 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 69408128 is about 8331.1540617132. The cubic root of 69408128 is about 410.9636819849.

The spelling of 69408128 in words is "sixty-nine million, four hundred eight thousand, one hundred twenty-eight".