221074726 has 4 divisors (see below), whose sum is σ = 331612092. Its totient is φ = 110537362.

The previous prime is 221074703. The next prime is 221074729. The reversal of 221074726 is 627470122.

221074726 is digitally balanced in base 2, 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 is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221074729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55268680 + ... + 55268683.

It is an arithmetic number, because the mean of its divisors is an integer number (82903023).

Almost surely, 2^221074726 is an apocalyptic number.

221074726 is a deficient number, since it is larger than the sum of its proper divisors (110537366).

221074726 is a wasteful number, since it uses less digits than its factorization.

221074726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110537365.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 221074726 is about 14868.5818422605. The cubic root of 221074726 is about 604.6624950869.

The spelling of 221074726 in words is "two hundred twenty-one million, seventy-four thousand, seven hundred twenty-six".