215040154 has 16 divisors (see below), whose sum is σ = 369091008. Its totient is φ = 92047392.

The previous prime is 215040151. The next prime is 215040167. The reversal of 215040154 is 451040512.

It is not an unprimeable number, because it can be changed into a prime (215040151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3037 + ... + 20959.

It is an arithmetic number, because the mean of its divisors is an integer number (23068188).

Almost surely, 2^215040154 is an apocalyptic number.

215040154 is a deficient number, since it is larger than the sum of its proper divisors (154050854).

215040154 is a wasteful number, since it uses less digits than its factorization.

215040154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18789.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 215040154 is about 14664.2474747257. The cubic root of 215040154 is about 599.1099339941.

Adding to 215040154 its reverse (451040512), we get a palindrome (666080666).

The spelling of 215040154 in words is "two hundred fifteen million, forty thousand, one hundred fifty-four".