220340402 has 8 divisors (see below), whose sum is σ = 339443436. Its totient is φ = 107192592.

The previous prime is 220340399. The next prime is 220340431. The reversal of 220340402 is 204043022.

It can be written as a sum of positive squares in 2 ways, for example, as 218182441 + 2157961 = 14771^2 + 1469^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488713 + ... + 1488860.

Almost surely, 2^220340402 is an apocalyptic number.

220340402 is a deficient number, since it is larger than the sum of its proper divisors (119103034).

220340402 is a wasteful number, since it uses less digits than its factorization.

220340402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977612.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 220340402 is about 14843.8674879561. The cubic root of 220340402 is about 603.9922681495.

Adding to 220340402 its reverse (204043022), we get a palindrome (424383424).

The spelling of 220340402 in words is "two hundred twenty million, three hundred forty thousand, four hundred two".