221307416 has 16 divisors (see below), whose sum is σ = 452674440. Its totient is φ = 100594240.

The previous prime is 221307413. The next prime is 221307473. The reversal of 221307416 is 614703122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221307413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257341 + ... + 1257516.

Almost surely, 2^221307416 is an apocalyptic number.

It is an amenable number.

221307416 is an abundant number, since it is smaller than the sum of its proper divisors (231367024).

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

221307416 is a wasteful number, since it uses less digits than its factorization.

221307416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514874 (or 2514870 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 221307416 is about 14876.4046731729. The cubic root of 221307416 is about 604.8745645285.

The spelling of 221307416 in words is "two hundred twenty-one million, three hundred seven thousand, four hundred sixteen".