280406132 has 6 divisors (see below), whose sum is σ = 490710738. Its totient is φ = 140203064.

The previous prime is 280406111. The next prime is 280406167. The reversal of 280406132 is 231604082.

It can be written as a sum of positive squares in only one way, i.e., 180526096 + 99880036 = 13436^2 + 9994^2 .

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 as a sum of consecutive naturals, namely, 35050763 + ... + 35050770.

It is an arithmetic number, because the mean of its divisors is an integer number (81785123).

Almost surely, 2^280406132 is an apocalyptic number.

It is an amenable number.

280406132 is a deficient number, since it is larger than the sum of its proper divisors (210304606).

280406132 is a wasteful number, since it uses less digits than its factorization.

280406132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70101537 (or 70101535 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 280406132 is about 16745.3316479549. The cubic root of 280406132 is about 654.5294151115.

The spelling of 280406132 in words is "two hundred eighty million, four hundred six thousand, one hundred thirty-two".