216692742 has 16 divisors (see below), whose sum is σ = 495297792. Its totient is φ = 61912200.

The previous prime is 216692741. The next prime is 216692753. The reversal of 216692742 is 247296612.

It is a self number, because there is not a number n which added to its sum of digits gives 216692742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216692741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2579634 + ... + 2579717.

It is an arithmetic number, because the mean of its divisors is an integer number (30956112).

Almost surely, 2^216692742 is an apocalyptic number.

216692742 is an abundant number, since it is smaller than the sum of its proper divisors (278605050).

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

216692742 is a wasteful number, since it uses less digits than its factorization.

216692742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159363.

The product of its digits is 72576, while the sum is 39.

The square root of 216692742 is about 14720.4871522650. The cubic root of 216692742 is about 600.6407432810.

The spelling of 216692742 in words is "two hundred sixteen million, six hundred ninety-two thousand, seven hundred forty-two".