147722 has 8 divisors (see below), whose sum is σ = 223236. Its totient is φ = 73312.

The previous prime is 147709. The next prime is 147727. The reversal of 147722 is 227741.

It can be written as a sum of positive squares in 2 ways, for example, as 121801 + 25921 = 349^2 + 161^2 .

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

It is not an unprimeable number, because it can be changed into a prime (147727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308 + ... + 624.

2¹⁴⁷⁷²² is an apocalyptic number.

147722 is a deficient number, since it is larger than the sum of its proper divisors (75514).

147722 is a wasteful number, since it uses less digits than its factorization.

147722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its digits is 784, while the sum is 23.

The square root of 147722 is about 384.3461981079. The cubic root of 147722 is about 52.8625845731.

The spelling of 147722 in words is "one hundred forty-seven thousand, seven hundred twenty-two", and thus it is an iban number.