215040254 has 32 divisors (see below), whose sum is σ = 382548096. Its totient is φ = 89370720.

The previous prime is 215040253. The next prime is 215040283. The reversal of 215040254 is 452040512.

It is a happy number.

215040254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215040253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27089 + ... + 34115.

It is an arithmetic number, because the mean of its divisors is an integer number (11954628).

Almost surely, 2^215040254 is an apocalyptic number.

215040254 is a deficient number, since it is larger than the sum of its proper divisors (167507842).

215040254 is a wasteful number, since it uses less digits than its factorization.

215040254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 215040254 is about 14664.2508843786. The cubic root of 215040254 is about 599.1100268620.

Adding to 215040254 its reverse (452040512), we get a palindrome (667080766).

The spelling of 215040254 in words is "two hundred fifteen million, forty thousand, two hundred fifty-four".