165280700 has 36 divisors (see below), whose sum is σ = 386251320. Its totient is φ = 61026240.

The previous prime is 165280699. The next prime is 165280711. The reversal of 165280700 is 7082561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62270 + ... + 64869.

Almost surely, 2^165280700 is an apocalyptic number.

165280700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165280700 is an abundant number, since it is smaller than the sum of its proper divisors (220970620).

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

165280700 is a wasteful number, since it uses less digits than its factorization.

165280700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127166 (or 127159 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 165280700 is about 12856.1541683351. The cubic root of 165280700 is about 548.7915063483.

It can be divided in two parts, 165 and 280700, that multiplied together give a triangular number (46315500 = T₉₆₂₄).

The spelling of 165280700 in words is "one hundred sixty-five million, two hundred eighty thousand, seven hundred".