69289290 has 128 divisors (see below), whose sum is σ = 214986240. Its totient is φ = 15552000.

The previous prime is 69289279. The next prime is 69289291. The reversal of 69289290 is 9298296.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (69289291) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114990 + ... + 115590.

It is an arithmetic number, because the mean of its divisors is an integer number (1679580).

Almost surely, 2^69289290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69289290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107493120).

69289290 is an abundant number, since it is smaller than the sum of its proper divisors (145696950).

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

69289290 is a wasteful number, since it uses less digits than its factorization.

69289290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 69289290 is about 8324.0188611031. The cubic root of 69289290 is about 410.7290024504.

The spelling of 69289290 in words is "sixty-nine million, two hundred eighty-nine thousand, two hundred ninety".