280655432 has 12 divisors (see below), whose sum is σ = 526317795. Its totient is φ = 140304024.

The previous prime is 280655413. The next prime is 280655443. The reversal of 280655432 is 234556082.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 140327716 + 140327716 = 11846^2 + 11846^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11846.

It is a super-2 number, since 2×280655432² = 157534943022213248, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280655392 and 280655401.

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 2 ways as a sum of consecutive naturals, for example, 44423 + ... + 50345.

Almost surely, 2^280655432 is an apocalyptic number.

It is an amenable number.

280655432 is a deficient number, since it is larger than the sum of its proper divisors (245662363).

280655432 is an frugal number, since it uses more digits than its factorization.

280655432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11852 (or 5925 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 280655432 is about 16752.7738598717. The cubic root of 280655432 is about 654.7233312815.

The spelling of 280655432 in words is "two hundred eighty million, six hundred fifty-five thousand, four hundred thirty-two".