69385344 has 128 divisors (see below), whose sum is σ = 213857280. Its totient is φ = 19522560.

The previous prime is 69385343. The next prime is 69385417. The reversal of 69385344 is 44358396.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 69385296 and 69385305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69385343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222949 + ... + 223259.

It is an arithmetic number, because the mean of its divisors is an integer number (1670760).

Almost surely, 2^69385344 is an apocalyptic number.

69385344 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69385344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106928640).

69385344 is an abundant number, since it is smaller than the sum of its proper divisors (144471936).

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

69385344 is a wasteful number, since it uses less digits than its factorization.

69385344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 406 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 69385344 is about 8329.7865518871. The cubic root of 69385344 is about 410.9187092441.

The spelling of 69385344 in words is "sixty-nine million, three hundred eighty-five thousand, three hundred forty-four".