169247428 has 48 divisors (see below), whose sum is σ = 346477824. Its totient is φ = 70842240.

The previous prime is 169247401. The next prime is 169247431. The reversal of 169247428 is 824742961.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 336225 + ... + 336727.

It is an arithmetic number, because the mean of its divisors is an integer number (7218288).

Almost surely, 2^169247428 is an apocalyptic number.

It is an amenable number.

169247428 is an abundant number, since it is smaller than the sum of its proper divisors (177230396).

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

169247428 is a wasteful number, since it uses less digits than its factorization.

169247428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 770 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 169247428 is about 13009.5129808921. The cubic root of 169247428 is about 553.1471670944.

The spelling of 169247428 in words is "one hundred sixty-nine million, two hundred forty-seven thousand, four hundred twenty-eight".