148244778 has 24 divisors (see below), whose sum is σ = 350397216. Its totient is φ = 44922600.

The previous prime is 148244773. The next prime is 148244861. The reversal of 148244778 is 877442841.

It is not an unprimeable number, because it can be changed into a prime (148244771) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 374158 + ... + 374553.

It is an arithmetic number, because the mean of its divisors is an integer number (14599884).

Almost surely, 2^148244778 is an apocalyptic number.

148244778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

148244778 is an abundant number, since it is smaller than the sum of its proper divisors (202152438).

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

148244778 is a wasteful number, since it uses less digits than its factorization.

148244778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748730 (or 748727 counting only the distinct ones).

The product of its digits is 401408, while the sum is 45.

The square root of 148244778 is about 12175.5812181596. The cubic root of 148244778 is about 529.2487017326.

The spelling of 148244778 in words is "one hundred forty-eight million, two hundred forty-four thousand, seven hundred seventy-eight".