148778208 has 216 divisors, whose sum is σ = 471802968. Its totient is φ = 46096128.

The previous prime is 148778167. The next prime is 148778209. The reversal of 148778208 is 802877841.

It is a tau number, because it is divible by the number of its divisors (216).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148778209) 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 35 ways as a sum of consecutive naturals, for example, 2807110 + ... + 2807162.

It is an arithmetic number, because the mean of its divisors is an integer number (2184273).

Almost surely, 2^148778208 is an apocalyptic number.

148778208 is a gapful number since it is divisible by the number (18) 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 148778208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235901484).

148778208 is an abundant number, since it is smaller than the sum of its proper divisors (323024760).

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

148778208 is an equidigital number, since it uses as much as digits as its factorization.

148778208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The square root of 148778208 is about 12197.4672780869. The cubic root of 148778208 is about 529.8827413549.

The spelling of 148778208 in words is "one hundred forty-eight million, seven hundred seventy-eight thousand, two hundred eight".