216475530 has 32 divisors (see below), whose sum is σ = 533585664. Its totient is φ = 56166336.

The previous prime is 216475499. The next prime is 216475547. The reversal of 216475530 is 35574612.

It is a junction number, because it is equal to n+sod(n) for n = 216475491 and 216475500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96402 + ... + 98621.

It is an arithmetic number, because the mean of its divisors is an integer number (16674552).

Almost surely, 2^216475530 is an apocalyptic number.

216475530 is an abundant number, since it is smaller than the sum of its proper divisors (317110134).

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

216475530 is a wasteful number, since it uses less digits than its factorization.

216475530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195070.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 216475530 is about 14713.1074216156. The cubic root of 216475530 is about 600.4399828352.

The spelling of 216475530 in words is "two hundred sixteen million, four hundred seventy-five thousand, five hundred thirty".