220402671 has 12 divisors (see below), whose sum is σ = 312174792. Its totient is φ = 138291328.

The previous prime is 220402667. The next prime is 220402681. The reversal of 220402671 is 176204022.

It is not a de Polignac number, because 220402671 - 2² = 220402667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220402661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126240 + ... + 127973.

It is an arithmetic number, because the mean of its divisors is an integer number (26014566).

Almost surely, 2^220402671 is an apocalyptic number.

220402671 is a deficient number, since it is larger than the sum of its proper divisors (91772121).

220402671 is a wasteful number, since it uses less digits than its factorization.

220402671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254250 (or 254233 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 220402671 is about 14845.9648052931. The cubic root of 220402671 is about 604.0491595954.

Adding to 220402671 its reverse (176204022), we get a palindrome (396606693).

The spelling of 220402671 in words is "two hundred twenty million, four hundred two thousand, six hundred seventy-one".