1216470 has 64 divisors (see below), whose sum is σ = 3193344. Its totient is φ = 295680.

The previous prime is 1216459. The next prime is 1216489. The reversal of 1216470 is 746121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28269 + ... + 28311.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2^1216470 is an apocalyptic number.

1216470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1216470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596672).

1216470 is an abundant number, since it is smaller than the sum of its proper divisors (1976874).

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

1216470 is a wasteful number, since it uses less digits than its factorization.

1216470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117.

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

The square root of 1216470 is about 1102.9369882273. The cubic root of 1216470 is about 106.7498158088.

The spelling of 1216470 in words is "one million, two hundred sixteen thousand, four hundred seventy".