69189428 has 48 divisors (see below), whose sum is σ = 157538304. Its totient is φ = 25782240.

The previous prime is 69189403. The next prime is 69189437. The reversal of 69189428 is 82498196.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2201 + ... + 11967.

It is an arithmetic number, because the mean of its divisors is an integer number (3282048).

Almost surely, 2^69189428 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 69189428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78769152).

69189428 is an abundant number, since it is smaller than the sum of its proper divisors (88348876).

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

69189428 is a wasteful number, since it uses less digits than its factorization.

69189428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9812 (or 9810 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 69189428 is about 8318.0182736034. The cubic root of 69189428 is about 410.5315888719.

The spelling of 69189428 in words is "sixty-nine million, one hundred eighty-nine thousand, four hundred twenty-eight".