69728274 has 72 divisors (see below), whose sum is σ = 191747088. Its totient is φ = 18108720.

The previous prime is 69728273. The next prime is 69728291. The reversal of 69728274 is 47282796.

It is a super-3 number, since 3×69728274³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (69728273) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6109 + ... + 13295.

It is an arithmetic number, because the mean of its divisors is an integer number (2663154).

Almost surely, 2^69728274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69728274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95873544).

69728274 is an abundant number, since it is smaller than the sum of its proper divisors (122018814).

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

69728274 is a wasteful number, since it uses less digits than its factorization.

69728274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220 (or 7210 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 69728274 is about 8350.3457413451. The cubic root of 69728274 is about 411.5945716346.

The spelling of 69728274 in words is "sixty-nine million, seven hundred twenty-eight thousand, two hundred seventy-four".