280602428 has 6 divisors (see below), whose sum is σ = 491054256. Its totient is φ = 140301212.

The previous prime is 280602409. The next prime is 280602449. The reversal of 280602428 is 824206082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 280602394 and 280602403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35075300 + ... + 35075307.

It is an arithmetic number, because the mean of its divisors is an integer number (81842376).

Almost surely, 2^280602428 is an apocalyptic number.

It is an amenable number.

280602428 is a deficient number, since it is larger than the sum of its proper divisors (210451828).

280602428 is a wasteful number, since it uses less digits than its factorization.

280602428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70150611 (or 70150609 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 280602428 is about 16751.1918381947. The cubic root of 280602428 is about 654.6821121252.

The spelling of 280602428 in words is "two hundred eighty million, six hundred two thousand, four hundred twenty-eight".