148281990 has 128 divisors (see below), whose sum is σ = 397135872. Its totient is φ = 35266560.

The previous prime is 148281983. The next prime is 148281997. The reversal of 148281990 is 99182841.

It is an interprime number because it is at equal distance from previous prime (148281983) and next prime (148281997).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148281997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1312174 + ... + 1312286.

It is an arithmetic number, because the mean of its divisors is an integer number (3102624).

Almost surely, 2^148281990 is an apocalyptic number.

148281990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 148281990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198567936).

148281990 is an abundant number, since it is smaller than the sum of its proper divisors (248853882).

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

148281990 is a wasteful number, since it uses less digits than its factorization.

148281990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 148281990 is about 12177.1092628752. The cubic root of 148281990 is about 529.2929815498.

The spelling of 148281990 in words is "one hundred forty-eight million, two hundred eighty-one thousand, nine hundred ninety".