221449374 has 12 divisors (see below), whose sum is σ = 479807016. Its totient is φ = 73816452.

The previous prime is 221449373. The next prime is 221449381. The reversal of 221449374 is 473944122.

221449374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221449373) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6151354 + ... + 6151389.

It is an arithmetic number, because the mean of its divisors is an integer number (39983918).

Almost surely, 2^221449374 is an apocalyptic number.

221449374 is an abundant number, since it is smaller than the sum of its proper divisors (258357642).

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

221449374 is a wasteful number, since it uses less digits than its factorization.

221449374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12302751 (or 12302748 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 221449374 is about 14881.1751552087. The cubic root of 221449374 is about 605.0038694741.

The spelling of 221449374 in words is "two hundred twenty-one million, four hundred forty-nine thousand, three hundred seventy-four".