1216504 has 8 divisors (see below), whose sum is σ = 2280960. Its totient is φ = 608248.

The previous prime is 1216489. The next prime is 1216507. The reversal of 1216504 is 4056121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76024 + ... + 76039.

It is an arithmetic number, because the mean of its divisors is an integer number (285120).

2^1216504 is an apocalyptic number.

It is an amenable number.

1216504 is a deficient number, since it is larger than the sum of its proper divisors (1064456).

1216504 is a wasteful number, since it uses less digits than its factorization.

1216504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152069 (or 152065 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1216504 is about 1102.9524015115. The cubic root of 1216504 is about 106.7508103422.

The spelling of 1216504 in words is "one million, two hundred sixteen thousand, five hundred four".