216486734 has 8 divisors (see below), whose sum is σ = 328078128. Its totient is φ = 107127360.

The previous prime is 216486731. The next prime is 216486757. The reversal of 216486734 is 437684612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216486691 and 216486700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216486731) 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, 557762 + ... + 558149.

It is an arithmetic number, because the mean of its divisors is an integer number (41009766).

Almost surely, 2^216486734 is an apocalyptic number.

216486734 is a deficient number, since it is larger than the sum of its proper divisors (111591394).

216486734 is a wasteful number, since it uses less digits than its factorization.

216486734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116010.

The product of its digits is 193536, while the sum is 41.

The square root of 216486734 is about 14713.4881656254. The cubic root of 216486734 is about 600.4503415326.

It can be divided in two parts, 21648 and 6734, that added together give a palindrome (28382).

The spelling of 216486734 in words is "two hundred sixteen million, four hundred eighty-six thousand, seven hundred thirty-four".