148445220 has 288 divisors, whose sum is σ = 549126144. Its totient is φ = 29272320.

The previous prime is 148445203. The next prime is 148445257. The reversal of 148445220 is 22544841.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1168797 + ... + 1168923.

It is an arithmetic number, because the mean of its divisors is an integer number (1906688).

Almost surely, 2^148445220 is an apocalyptic number.

148445220 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 148445220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274563072).

148445220 is an abundant number, since it is smaller than the sum of its proper divisors (400680924).

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

148445220 is a wasteful number, since it uses less digits than its factorization.

148445220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 148445220 is about 12183.8097490071. The cubic root of 148445220 is about 529.4871269768.

The spelling of 148445220 in words is "one hundred forty-eight million, four hundred forty-five thousand, two hundred twenty".