147221008 has 40 divisors (see below), whose sum is σ = 311855040. Its totient is φ = 66771840.

The previous prime is 147220993. The next prime is 147221017. The reversal of 147221008 is 800122741.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147166 + ... + 148162.

It is an arithmetic number, because the mean of its divisors is an integer number (7796376).

Almost surely, 2^147221008 is an apocalyptic number.

It is an amenable number.

147221008 is an abundant number, since it is smaller than the sum of its proper divisors (164634032).

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

147221008 is a wasteful number, since it uses less digits than its factorization.

147221008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 147221008 is about 12133.4664461563. The cubic root of 147221008 is about 528.0275659009.

Adding to 147221008 its reverse (800122741), we get a palindrome (947343749).

The spelling of 147221008 in words is "one hundred forty-seven million, two hundred twenty-one thousand, eight".