69904128 has 72 divisors (see below), whose sum is σ = 212641408. Its totient is φ = 19971072.

The previous prime is 69904099. The next prime is 69904129. The reversal of 69904128 is 82140996.

It is a super-2 number, since 2×69904128² = 9773174222880768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69904129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126 + ... + 11877.

Almost surely, 2^69904128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69904128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106320704).

69904128 is an abundant number, since it is smaller than the sum of its proper divisors (142737280).

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

69904128 is a wasteful number, since it uses less digits than its factorization.

69904128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13029 (or 13015 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 69904128 is about 8360.8688543715. The cubic root of 69904128 is about 411.9402936069.

The spelling of 69904128 in words is "sixty-nine million, nine hundred four thousand, one hundred twenty-eight".