147642220 has 48 divisors (see below), whose sum is σ = 346123008. Its totient is φ = 52436160.

The previous prime is 147642211. The next prime is 147642233. The reversal of 147642220 is 22246741.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657 + ... + 17263.

It is an arithmetic number, because the mean of its divisors is an integer number (7210896).

Almost surely, 2^147642220 is an apocalyptic number.

147642220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 147642220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173061504).

147642220 is an abundant number, since it is smaller than the sum of its proper divisors (198480788).

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

147642220 is a wasteful number, since it uses less digits than its factorization.

147642220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15670 (or 15668 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 147642220 is about 12150.8114955340. The cubic root of 147642220 is about 528.5306638707.

Adding to 147642220 its reverse (22246741), we get a palindrome (169888961).

The spelling of 147642220 in words is "one hundred forty-seven million, six hundred forty-two thousand, two hundred twenty".