1218416 has 20 divisors (see below), whose sum is σ = 2377824. Its totient is φ = 604800.

The previous prime is 1218401. The next prime is 1218421. The reversal of 1218416 is 6148121.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1218391 and 1218400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4196 + ... + 4476.

2^1218416 is an apocalyptic number.

1218416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1218416 is a deficient number, since it is larger than the sum of its proper divisors (1159408).

1218416 is a wasteful number, since it uses less digits than its factorization.

1218416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 554 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 1218416 is about 1103.8188257137. The cubic root of 1218416 is about 106.8067084210.

The spelling of 1218416 in words is "one million, two hundred eighteen thousand, four hundred sixteen".