169240772 has 12 divisors (see below), whose sum is σ = 296449020. Its totient is φ = 84541056.

The previous prime is 169240769. The next prime is 169240777. The reversal of 169240772 is 277042961.

It can be written as a sum of positive squares in 2 ways, for example, as 79673476 + 89567296 = 8926^2 + 9464^2 .

It is not an unprimeable number, because it can be changed into a prime (169240777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14897 + ... + 23672.

It is an arithmetic number, because the mean of its divisors is an integer number (24704085).

Almost surely, 2^169240772 is an apocalyptic number.

It is an amenable number.

169240772 is a deficient number, since it is larger than the sum of its proper divisors (127208248).

169240772 is a wasteful number, since it uses less digits than its factorization.

169240772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39670 (or 39668 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 169240772 is about 13009.2571655725. The cubic root of 169240772 is about 553.1399157862.

The spelling of 169240772 in words is "one hundred sixty-nine million, two hundred forty thousand, seven hundred seventy-two".