164999280 has 160 divisors (see below), whose sum is σ = 556732224. Its totient is φ = 40255488.

The previous prime is 164999273. The next prime is 164999291. The reversal of 164999280 is 82999461.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150414 + ... + 151506.

Almost surely, 2^164999280 is an apocalyptic number.

164999280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164999280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278366112).

164999280 is an abundant number, since it is smaller than the sum of its proper divisors (391732944).

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

164999280 is a wasteful number, since it uses less digits than its factorization.

164999280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 164999280 is about 12845.2045526726. The cubic root of 164999280 is about 548.4798574521.

The spelling of 164999280 in words is "one hundred sixty-four million, nine hundred ninety-nine thousand, two hundred eighty".