69216028 has 30 divisors (see below), whose sum is σ = 141327256. Its totient is φ = 29659896.

The previous prime is 69216019. The next prime is 69216067. The reversal of 69216028 is 82061296.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 69215984 and 69216002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6001 + ... + 13207.

Almost surely, 2^69216028 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 69216028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70663628).

69216028 is an abundant number, since it is smaller than the sum of its proper divisors (72111228).

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

69216028 is an equidigital number, since it uses as much as digits as its factorization.

69216028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7239 (or 7216 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 69216028 is about 8319.6170584949. The cubic root of 69216028 is about 410.5841920005.

The spelling of 69216028 in words is "sixty-nine million, two hundred sixteen thousand, twenty-eight".