221477080 has 64 divisors (see below), whose sum is σ = 556930080. Its totient is φ = 78566400.

The previous prime is 221477057. The next prime is 221477083. The reversal of 221477080 is 80774122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221477083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11902 + ... + 24178.

Almost surely, 2^221477080 is an apocalyptic number.

221477080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221477080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278465040).

221477080 is an abundant number, since it is smaller than the sum of its proper divisors (335453000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221477080 is a wasteful number, since it uses less digits than its factorization.

221477080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12340 (or 12336 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 221477080 is about 14882.1060337575. The cubic root of 221477080 is about 605.0290995270.

The spelling of 221477080 in words is "two hundred twenty-one million, four hundred seventy-seven thousand, eighty".