147221308 has 36 divisors (see below), whose sum is σ = 282229920. Its totient is φ = 67157376.

The previous prime is 147221303. The next prime is 147221339. The reversal of 147221308 is 803122741.

147221308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×147221308² = 43348227058461728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147221303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58941 + ... + 61387.

It is an arithmetic number, because the mean of its divisors is an integer number (7839720).

Almost surely, 2^147221308 is an apocalyptic number.

It is an amenable number.

147221308 is a deficient number, since it is larger than the sum of its proper divisors (135008612).

147221308 is a wasteful number, since it uses less digits than its factorization.

147221308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566 (or 2551 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 147221308 is about 12133.4788086517. The cubic root of 147221308 is about 528.0279245638.

The spelling of 147221308 in words is "one hundred forty-seven million, two hundred twenty-one thousand, three hundred eight".