220900473 has 8 divisors (see below), whose sum is σ = 327260000. Its totient is φ = 147266964.

The previous prime is 220900457. The next prime is 220900481. The reversal of 220900473 is 374009022.

It is not a de Polignac number, because 220900473 - 2⁴ = 220900457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8181499 = 220900473 / (2 + 2 + 0 + 9 + 0 + 0 + 4 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220900573) 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, 4090723 + ... + 4090776.

It is an arithmetic number, because the mean of its divisors is an integer number (40907500).

Almost surely, 2^220900473 is an apocalyptic number.

It is an amenable number.

220900473 is a deficient number, since it is larger than the sum of its proper divisors (106359527).

220900473 is an equidigital number, since it uses as much as digits as its factorization.

220900473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8181508 (or 8181502 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 220900473 is about 14862.7209150949. The cubic root of 220900473 is about 604.5035866026.

Adding to 220900473 its reverse (374009022), we get a palindrome (594909495).

The spelling of 220900473 in words is "two hundred twenty million, nine hundred thousand, four hundred seventy-three".