69403872 has 48 divisors (see below), whose sum is σ = 183980160. Its totient is φ = 22906752.

The previous prime is 69403847. The next prime is 69403879. The reversal of 69403872 is 27830496.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 69403872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69403879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6379 + ... + 13397.

It is an arithmetic number, because the mean of its divisors is an integer number (3832920).

Almost surely, 2^69403872 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 69403872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91990080).

69403872 is an abundant number, since it is smaller than the sum of its proper divisors (114576288).

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

69403872 is a wasteful number, since it uses less digits than its factorization.

69403872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135 (or 7127 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 69403872 is about 8330.8986310001. The cubic root of 69403872 is about 410.9552819256.

The spelling of 69403872 in words is "sixty-nine million, four hundred three thousand, eight hundred seventy-two".