220671572 has 18 divisors (see below), whose sum is σ = 424474554. Its totient is φ = 100305040.

The previous prime is 220671559. The next prime is 220671599. The reversal of 220671572 is 275176022.

220671572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 212110096 + 8561476 = 14564^2 + 2926^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227483 + ... + 228450.

Almost surely, 2^220671572 is an apocalyptic number.

220671572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220671572 is a deficient number, since it is larger than the sum of its proper divisors (203802982).

220671572 is a wasteful number, since it uses less digits than its factorization.

220671572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455959 (or 455946 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 220671572 is about 14855.0184112979. The cubic root of 220671572 is about 604.2947153170.

The spelling of 220671572 in words is "two hundred twenty million, six hundred seventy-one thousand, five hundred seventy-two".