2238400217 has 8 divisors (see below), whose sum is σ = 2425189536. Its totient is φ = 2057735232.

The previous prime is 2238400201. The next prime is 2238400231. The reversal of 2238400217 is 7120048322.

2238400217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2238400217 - 2⁴ = 2238400201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2238400217.

It is not an unprimeable number, because it can be changed into a prime (2238400247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1530323 + ... + 1531784.

It is an arithmetic number, because the mean of its divisors is an integer number (303148692).

Almost surely, 2^2238400217 is an apocalyptic number.

It is an amenable number.

2238400217 is a deficient number, since it is larger than the sum of its proper divisors (186789319).

2238400217 is a wasteful number, since it uses less digits than its factorization.

2238400217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062167.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2238400217 is about 47311.7344535159. The cubic root of 2238400217 is about 1308.1149620188.

Adding to 2238400217 its reverse (7120048322), we get a palindrome (9358448539).

The spelling of 2238400217 in words is "two billion, two hundred thirty-eight million, four hundred thousand, two hundred seventeen".