1047216 has 20 divisors (see below), whose sum is σ = 2705432. Its totient is φ = 349056.

The previous prime is 1047199. The next prime is 1047229. The reversal of 1047216 is 6127401.

It is a super-2 number, since 2×1047216² = 2193322701312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1047192 and 1047201.

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 in 3 ways as a sum of consecutive naturals, for example, 10861 + ... + 10956.

2^1047216 is an apocalyptic number.

1047216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1047216 is an abundant number, since it is smaller than the sum of its proper divisors (1658216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1047216 is a wasteful number, since it uses less digits than its factorization.

1047216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21828 (or 21822 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1047216 is about 1023.3357220385. The cubic root of 1047216 is about 101.5497260936.

The spelling of 1047216 in words is "one million, forty-seven thousand, two hundred sixteen".