69609428 has 24 divisors (see below), whose sum is σ = 140985600. Its totient is φ = 29454048.

The previous prime is 69609427. The next prime is 69609433. The reversal of 69609428 is 82490696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69609427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13523 + ... + 17946.

It is an arithmetic number, because the mean of its divisors is an integer number (5874400).

Almost surely, 2^69609428 is an apocalyptic number.

It is an amenable number.

69609428 is an abundant number, since it is smaller than the sum of its proper divisors (71376172).

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

69609428 is a wasteful number, since it uses less digits than its factorization.

69609428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31559 (or 31557 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 69609428 is about 8343.2264742125. The cubic root of 69609428 is about 411.3605958346.

The spelling of 69609428 in words is "sixty-nine million, six hundred nine thousand, four hundred twenty-eight".