221446774 has 8 divisors (see below), whose sum is σ = 335902680. Its totient is φ = 109479216.

The previous prime is 221446727. The next prime is 221446793. The reversal of 221446774 is 477644122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621864 + ... + 622219.

It is an arithmetic number, because the mean of its divisors is an integer number (41987835).

Almost surely, 2^221446774 is an apocalyptic number.

221446774 is a deficient number, since it is larger than the sum of its proper divisors (114455906).

221446774 is a wasteful number, since it uses less digits than its factorization.

221446774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244174.

The product of its digits is 75264, while the sum is 37.

The square root of 221446774 is about 14881.0877962601. The cubic root of 221446774 is about 605.0015017152.

It can be divided in two parts, 2214 and 46774, that multiplied together give a triangular number (103557636 = T₁₄₃₉₁).

The spelling of 221446774 in words is "two hundred twenty-one million, four hundred forty-six thousand, seven hundred seventy-four".