216147474 has 32 divisors (see below), whose sum is σ = 485095680. Its totient is φ = 71334000.

The previous prime is 216147467. The next prime is 216147487. The reversal of 216147474 is 474741612.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14362 + ... + 25269.

It is an arithmetic number, because the mean of its divisors is an integer number (15159240).

Almost surely, 2^216147474 is an apocalyptic number.

216147474 is an abundant number, since it is smaller than the sum of its proper divisors (268948206).

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

216147474 is a wasteful number, since it uses less digits than its factorization.

216147474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39743 (or 39737 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 216147474 is about 14701.9547679892. The cubic root of 216147474 is about 600.1365189353.

The spelling of 216147474 in words is "two hundred sixteen million, one hundred forty-seven thousand, four hundred seventy-four".