148263840 has 144 divisors (see below), whose sum is σ = 532677600. Its totient is φ = 37449216.

The previous prime is 148263839. The next prime is 148263887. The reversal of 148263840 is 48362841.

148263840 is a `hidden beast` number, since 14 + 8 + 2 + 638 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 148263795 and 148263804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24651 + ... + 30069.

It is an arithmetic number, because the mean of its divisors is an integer number (3699150).

Almost surely, 2^148263840 is an apocalyptic number.

148263840 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 148263840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266338800).

148263840 is an abundant number, since it is smaller than the sum of its proper divisors (384413760).

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

148263840 is a wasteful number, since it uses less digits than its factorization.

148263840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459 (or 5448 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 148263840 is about 12176.3639893032. The cubic root of 148263840 is about 529.2713851766.

Subtracting from 148263840 its reverse (48362841), we obtain a palindrome (99900999).

The spelling of 148263840 in words is "one hundred forty-eight million, two hundred sixty-three thousand, eight hundred forty".