220813401 has 8 divisors (see below), whose sum is σ = 295682400. Its totient is φ = 146576672.

The previous prime is 220813387. The next prime is 220813427. The reversal of 220813401 is 104318022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220813401 is a prime.

It is a super-2 number, since 2×220813401² = 97517116122373602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220813001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157251 + ... + 158648.

It is an arithmetic number, because the mean of its divisors is an integer number (36960300).

Almost surely, 2^220813401 is an apocalyptic number.

It is an amenable number.

220813401 is a deficient number, since it is larger than the sum of its proper divisors (74868999).

220813401 is a wasteful number, since it uses less digits than its factorization.

220813401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316135.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 220813401 is about 14859.7914184554. The cubic root of 220813401 is about 604.4241507481.

The spelling of 220813401 in words is "two hundred twenty million, eight hundred thirteen thousand, four hundred one".