280152 has 32 divisors (see below), whose sum is σ = 778800. Its totient is φ = 93312.

The previous prime is 280139. The next prime is 280183. The reversal of 280152 is 251082.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

280152 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433 + ... + 864.

2²⁸⁰¹⁵² is an apocalyptic number.

It is an amenable number.

280152 is an abundant number, since it is smaller than the sum of its proper divisors (498648).

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

280152 is a wasteful number, since it uses less digits than its factorization.

280152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 280152 is about 529.2938692258. The cubic root of 280152 is about 65.4331622070.

The spelling of 280152 in words is "two hundred eighty thousand, one hundred fifty-two".