69057072 has 90 divisors (see below), whose sum is σ = 224840148. Its totient is φ = 19728576.

The previous prime is 69057041. The next prime is 69057073. The reversal of 69057072 is 27075096.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (69057073) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2163 + ... + 11949.

Almost surely, 2^69057072 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 69057072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112420074).

69057072 is an abundant number, since it is smaller than the sum of its proper divisors (155783076).

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

69057072 is a wasteful number, since it uses less digits than its factorization.

69057072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9815 (or 9799 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 69057072 is about 8310.0584835487. The cubic root of 69057072 is about 410.2696461397.

The spelling of 69057072 in words is "sixty-nine million, fifty-seven thousand, seventy-two".