148449840 has 320 divisors, whose sum is σ = 595676160. Its totient is φ = 29675520.

The previous prime is 148449817. The next prime is 148449857. The reversal of 148449840 is 48944841.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 148449792 and 148449801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 535782 + ... + 536058.

It is an arithmetic number, because the mean of its divisors is an integer number (1861488).

Almost surely, 2^148449840 is an apocalyptic number.

148449840 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 148449840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297838080).

148449840 is an abundant number, since it is smaller than the sum of its proper divisors (447226320).

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

148449840 is a wasteful number, since it uses less digits than its factorization.

148449840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 148449840 is about 12183.9993434012. Note that the first 3 decimals coincide. The cubic root of 148449840 is about 529.4926199237.

The spelling of 148449840 in words is "one hundred forty-eight million, four hundred forty-nine thousand, eight hundred forty".