169280988 has 12 divisors (see below), whose sum is σ = 394989000. Its totient is φ = 56426992.

The previous prime is 169280983. The next prime is 169281001. The reversal of 169280988 is 889082961.

169280988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×169280988² = 57312105796512288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 169280988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169280983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7053363 + ... + 7053386.

It is an arithmetic number, because the mean of its divisors is an integer number (32915750).

Almost surely, 2^169280988 is an apocalyptic number.

It is an amenable number.

169280988 is an abundant number, since it is smaller than the sum of its proper divisors (225708012).

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

169280988 is a wasteful number, since it uses less digits than its factorization.

169280988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14106756 (or 14106754 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 169280988 is about 13010.8027423368. The cubic root of 169280988 is about 553.1837257831.

The spelling of 169280988 in words is "one hundred sixty-nine million, two hundred eighty thousand, nine hundred eighty-eight".