216140435 has 16 divisors (see below), whose sum is σ = 297091776. Its totient is φ = 147875328.

The previous prime is 216140429. The next prime is 216140513. The reversal of 216140435 is 534041612.

It is a cyclic number.

It is not a de Polignac number, because 216140435 - 2⁸ = 216140179 is a prime.

It is a Duffinian number.

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, 9239 + ... + 22751.

It is an arithmetic number, because the mean of its divisors is an integer number (18568236).

Almost surely, 2^216140435 is an apocalyptic number.

216140435 is a deficient number, since it is larger than the sum of its proper divisors (80951341).

216140435 is a wasteful number, since it uses less digits than its factorization.

216140435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13982.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 216140435 is about 14701.7153761049. The cubic root of 216140435 is about 600.1300042369.

The spelling of 216140435 in words is "two hundred sixteen million, one hundred forty thousand, four hundred thirty-five".