1284455 has 16 divisors (see below), whose sum is σ = 1625184. Its totient is φ = 973440.

The previous prime is 1284443. The next prime is 1284467. The reversal of 1284455 is 5544821.

It is an interprime number because it is at equal distance from previous prime (1284443) and next prime (1284467).

It is a de Polignac number, because none of the positive numbers 2^k-1284455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9740 + ... + 9870.

It is an arithmetic number, because the mean of its divisors is an integer number (101574).

2^1284455 is an apocalyptic number.

1284455 is a deficient number, since it is larger than the sum of its proper divisors (340729).

1284455 is a wasteful number, since it uses less digits than its factorization.

1284455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226.

The product of its digits is 6400, while the sum is 29.

The square root of 1284455 is about 1133.3379901865. The cubic root of 1284455 is about 108.7025247481.

The spelling of 1284455 in words is "one million, two hundred eighty-four thousand, four hundred fifty-five".