69720288 has 96 divisors (see below), whose sum is σ = 201906432. Its totient is φ = 20889600.

The previous prime is 69720283. The next prime is 69720289. The reversal of 69720288 is 88202796.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69720283) 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, 108448 + ... + 109088.

It is an arithmetic number, because the mean of its divisors is an integer number (2103192).

Almost surely, 2^69720288 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 69720288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100953216).

69720288 is an abundant number, since it is smaller than the sum of its proper divisors (132186144).

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

69720288 is a wasteful number, since it uses less digits than its factorization.

69720288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 69720288 is about 8349.8675438596. The cubic root of 69720288 is about 411.5788576851.

The spelling of 69720288 in words is "sixty-nine million, seven hundred twenty thousand, two hundred eighty-eight".