1216464 has 20 divisors (see below), whose sum is σ = 3142656. Its totient is φ = 405472.

The previous prime is 1216459. The next prime is 1216489. The reversal of 1216464 is 4646121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

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, 12624 + ... + 12719.

2^1216464 is an apocalyptic number.

It is an amenable number.

1216464 is an abundant number, since it is smaller than the sum of its proper divisors (1926192).

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

1216464 is a wasteful number, since it uses less digits than its factorization.

1216464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25354 (or 25348 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1216464 is about 1102.9342682137. The cubic root of 1216464 is about 106.7496403010.

The spelling of 1216464 in words is "one million, two hundred sixteen thousand, four hundred sixty-four".