216120504 has 16 divisors (see below), whose sum is σ = 540301320. Its totient is φ = 72040160.

The previous prime is 216120503. The next prime is 216120533. The reversal of 216120504 is 405021612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216120503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4502487 + ... + 4502534.

Almost surely, 2^216120504 is an apocalyptic number.

216120504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216120504 is an abundant number, since it is smaller than the sum of its proper divisors (324180816).

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

216120504 is a wasteful number, since it uses less digits than its factorization.

216120504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9005030 (or 9005026 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 216120504 is about 14701.0375144069. The cubic root of 216120504 is about 600.1115570349. Note that the first 3 decimals are identical.

The spelling of 216120504 in words is "two hundred sixteen million, one hundred twenty thousand, five hundred four".