69905472 has 112 divisors (see below), whose sum is σ = 227697792. Its totient is φ = 18432000.

The previous prime is 69905471. The next prime is 69905491. The reversal of 69905472 is 27450996.

It is a tau number, because it is divible by the number of its divisors (112).

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

It is not an unprimeable number, because it can be changed into a prime (69905471) 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, 15472 + ... + 19472.

It is an arithmetic number, because the mean of its divisors is an integer number (2033016).

Almost surely, 2^69905472 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 69905472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113848896).

69905472 is an abundant number, since it is smaller than the sum of its proper divisors (157792320).

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

69905472 is a wasteful number, since it uses less digits than its factorization.

69905472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 69905472 is about 8360.9492284070. The cubic root of 69905472 is about 411.9429336237.

The spelling of 69905472 in words is "sixty-nine million, nine hundred five thousand, four hundred seventy-two".