69232720 has 20 divisors (see below), whose sum is σ = 160966260. Its totient is φ = 27693056.

The previous prime is 69232717. The next prime is 69232729. The reversal of 69232720 is 2723296.

It can be written as a sum of positive squares in 2 ways, for example, as 51322896 + 17909824 = 7164^2 + 4232^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69232729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432625 + ... + 432784.

It is an arithmetic number, because the mean of its divisors is an integer number (8048313).

Almost surely, 2^69232720 is an apocalyptic number.

It is an amenable number.

69232720 is an abundant number, since it is smaller than the sum of its proper divisors (91733540).

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

69232720 is a wasteful number, since it uses less digits than its factorization.

69232720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865422 (or 865416 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 69232720 is about 8320.6201691941. The cubic root of 69232720 is about 410.6171945708.

The spelling of 69232720 in words is "sixty-nine million, two hundred thirty-two thousand, seven hundred twenty".