148221000 has 192 divisors, whose sum is σ = 513976320. Its totient is φ = 38505600.

The previous prime is 148220987. The next prime is 148221023. The reversal of 148221000 is 122841.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 386809 + ... + 387191.

It is an arithmetic number, because the mean of its divisors is an integer number (2676960).

Almost surely, 2^148221000 is an apocalyptic number.

148221000 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 148221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256988160).

148221000 is an abundant number, since it is smaller than the sum of its proper divisors (365755320).

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

148221000 is a wasteful number, since it uses less digits than its factorization.

148221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 148221000 is about 12174.6047163758. The cubic root of 148221000 is about 529.2204036059.

Adding to 148221000 its reverse (122841), we get a palindrome (148343841).

The spelling of 148221000 in words is "one hundred forty-eight million, two hundred twenty-one thousand".