69729912 has 96 divisors (see below), whose sum is σ = 222842880. Its totient is φ = 19275840.

The previous prime is 69729901. The next prime is 69729929. The reversal of 69729912 is 21992796.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13393 + ... + 17855.

It is an arithmetic number, because the mean of its divisors is an integer number (2321280).

Almost surely, 2^69729912 is an apocalyptic number.

69729912 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69729912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111421440).

69729912 is an abundant number, since it is smaller than the sum of its proper divisors (153112968).

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

69729912 is a wasteful number, since it uses less digits than its factorization.

69729912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513 (or 4506 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 69729912 is about 8350.4438205403. The cubic root of 69729912 is about 411.5977945579.

The spelling of 69729912 in words is "sixty-nine million, seven hundred twenty-nine thousand, nine hundred twelve".