69128952 has 64 divisors (see below), whose sum is σ = 178536960. Its totient is φ = 22291200.

The previous prime is 69128947. The next prime is 69128981. The reversal of 69128952 is 25982196.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160177 + ... + 160607.

It is an arithmetic number, because the mean of its divisors is an integer number (2789640).

Almost surely, 2^69128952 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 69128952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89268480).

69128952 is an abundant number, since it is smaller than the sum of its proper divisors (109408008).

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

69128952 is a wasteful number, since it uses less digits than its factorization.

69128952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 640 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 69128952 is about 8314.3822380259. The cubic root of 69128952 is about 410.4119436884.

The spelling of 69128952 in words is "sixty-nine million, one hundred twenty-eight thousand, nine hundred fifty-two".