280097234 has 4 divisors (see below), whose sum is σ = 420145854. Its totient is φ = 140048616.

The previous prime is 280097179. The next prime is 280097261. The reversal of 280097234 is 432790082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 253605625 + 26491609 = 15925^2 + 5147^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 280097194 and 280097203.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70024307 + ... + 70024310.

Almost surely, 2^280097234 is an apocalyptic number.

280097234 is a deficient number, since it is larger than the sum of its proper divisors (140048620).

280097234 is a wasteful number, since it uses less digits than its factorization.

280097234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140048619.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 280097234 is about 16736.1056999530. The cubic root of 280097234 is about 654.2889815739.

The spelling of 280097234 in words is "two hundred eighty million, ninety-seven thousand, two hundred thirty-four".