165240244 has 24 divisors (see below), whose sum is σ = 312598440. Its totient is φ = 75974784.

The previous prime is 165240227. The next prime is 165240253. The reversal of 165240244 is 442042561.

It can be written as a sum of positive squares in 4 ways, for example, as 2371600 + 162868644 = 1540^2 + 12762^2 .

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, 8082 + ... + 19894.

It is an arithmetic number, because the mean of its divisors is an integer number (13024935).

Almost surely, 2^165240244 is an apocalyptic number.

It is an amenable number.

165240244 is a deficient number, since it is larger than the sum of its proper divisors (147358196).

165240244 is a wasteful number, since it uses less digits than its factorization.

165240244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12099 (or 12097 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 165240244 is about 12854.5806621609. The cubic root of 165240244 is about 548.7467265264.

The spelling of 165240244 in words is "one hundred sixty-five million, two hundred forty thousand, two hundred forty-four".