220209746 has 4 divisors (see below), whose sum is σ = 330314622. Its totient is φ = 110104872.

The previous prime is 220209739. The next prime is 220209761. The reversal of 220209746 is 647902022.

220209746 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140304025 + 79905721 = 11845^2 + 8939^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55052435 + ... + 55052438.

Almost surely, 2^220209746 is an apocalyptic number.

220209746 is a deficient number, since it is larger than the sum of its proper divisors (110104876).

220209746 is a wasteful number, since it uses less digits than its factorization.

220209746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110104875.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 220209746 is about 14839.4658259656. The cubic root of 220209746 is about 603.8728607592.

The spelling of 220209746 in words is "two hundred twenty million, two hundred nine thousand, seven hundred forty-six".