216739370 has 16 divisors (see below), whose sum is σ = 390974688. Its totient is φ = 86508240.

The previous prime is 216739363. The next prime is 216739381. The reversal of 216739370 is 73937612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18536 + ... + 27875.

It is an arithmetic number, because the mean of its divisors is an integer number (24435918).

Almost surely, 2^216739370 is an apocalyptic number.

216739370 is a deficient number, since it is larger than the sum of its proper divisors (174235318).

216739370 is a wasteful number, since it uses less digits than its factorization.

216739370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46885.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 216739370 is about 14722.0708461819. The cubic root of 216739370 is about 600.6838222011.

The spelling of 216739370 in words is "two hundred sixteen million, seven hundred thirty-nine thousand, three hundred seventy".