216474472 has 16 divisors (see below), whose sum is σ = 413548740. Its totient is φ = 106194816.

The previous prime is 216474469. The next prime is 216474493. The reversal of 216474472 is 274474612.

216474472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 205807716 + 10666756 = 14346^2 + 3266^2 .

It is a super-2 number, since 2×216474472² = 93722394055357568, which contains 22 as substring.

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, 254853 + ... + 255700.

Almost surely, 2^216474472 is an apocalyptic number.

It is an amenable number.

216474472 is a deficient number, since it is larger than the sum of its proper divisors (197074268).

216474472 is a wasteful number, since it uses less digits than its factorization.

216474472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510612 (or 510608 counting only the distinct ones).

The product of its digits is 75264, while the sum is 37.

The square root of 216474472 is about 14713.0714672362. The cubic root of 216474472 is about 600.4390046391.

It can be divided in two parts, 2164 and 74472, that added together give a triangular number (76636 = T₃₉₁).

The spelling of 216474472 in words is "two hundred sixteen million, four hundred seventy-four thousand, four hundred seventy-two".