1220284 has 24 divisors (see below), whose sum is σ = 2377088. Its totient is φ = 544320.

The previous prime is 1220257. The next prime is 1220309. The reversal of 1220284 is 4820221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234 + ... + 1990.

2^1220284 is an apocalyptic number.

It is an amenable number.

1220284 is a deficient number, since it is larger than the sum of its proper divisors (1156804).

1220284 is a wasteful number, since it uses less digits than its factorization.

1220284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1220284 is about 1104.6646549972. The cubic root of 1220284 is about 106.8612636952.

The spelling of 1220284 in words is "one million, two hundred twenty thousand, two hundred eighty-four".