148278840 has 64 divisors (see below), whose sum is σ = 447876000. Its totient is φ = 39270912.

The previous prime is 148278817. The next prime is 148278857. The reversal of 148278840 is 48872841.

It is a super-2 number, since 2×148278840² = 43973228783491200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 148278792 and 148278801.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13734 + ... + 22026.

Almost surely, 2^148278840 is an apocalyptic number.

148278840 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 148278840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223938000).

148278840 is an abundant number, since it is smaller than the sum of its proper divisors (299597160).

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

148278840 is a wasteful number, since it uses less digits than its factorization.

148278840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8456 (or 8452 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 42.

The square root of 148278840 is about 12176.9799211463. The cubic root of 148278840 is about 529.2892335453.

The spelling of 148278840 in words is "one hundred forty-eight million, two hundred seventy-eight thousand, eight hundred forty".