169196640 has 48 divisors (see below), whose sum is σ = 532970928. Its totient is φ = 45118976.

The previous prime is 169196633. The next prime is 169196669. The reversal of 169196640 is 46691961.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 169196592 and 169196601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175767 + ... + 176726.

It is an arithmetic number, because the mean of its divisors is an integer number (11103561).

Almost surely, 2^169196640 is an apocalyptic number.

169196640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169196640 is an abundant number, since it is smaller than the sum of its proper divisors (363774288).

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

169196640 is a wasteful number, since it uses less digits than its factorization.

169196640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352511 (or 352503 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 169196640 is about 13007.5608781970. The cubic root of 169196640 is about 553.0918318392.

The spelling of 169196640 in words is "one hundred sixty-nine million, one hundred ninety-six thousand, six hundred forty".