147228220 has 24 divisors (see below), whose sum is σ = 309934800. Its totient is φ = 58747392.

The previous prime is 147228167. The next prime is 147228229. The reversal of 147228220 is 22822741.

It is a super-2 number, since 2×147228220² = 43352297528736800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147228229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405 + ... + 17164.

It is an arithmetic number, because the mean of its divisors is an integer number (12913950).

Almost surely, 2^147228220 is an apocalyptic number.

147228220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

147228220 is an abundant number, since it is smaller than the sum of its proper divisors (162706580).

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

147228220 is a wasteful number, since it uses less digits than its factorization.

147228220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17997 (or 17995 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 147228220 is about 12133.7636370584. The cubic root of 147228220 is about 528.0361880232.

It can be divided in two parts, 1472 and 28220, that added together give a palindrome (29692).

The spelling of 147228220 in words is "one hundred forty-seven million, two hundred twenty-eight thousand, two hundred twenty".