148805640 has 128 divisors (see below), whose sum is σ = 499132800. Its totient is φ = 39432960.

The previous prime is 148805639. The next prime is 148805647. The reversal of 148805640 is 46508841.

148805640 is a `hidden beast` number, since 1 + 4 + 8 + 8 + 0 + 5 + 640 = 666.

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 = 148805595 and 148805604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148805647) 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 31 ways as a sum of consecutive naturals, for example, 227554 + ... + 228206.

It is an arithmetic number, because the mean of its divisors is an integer number (3899475).

Almost surely, 2^148805640 is an apocalyptic number.

148805640 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 148805640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249566400).

148805640 is an abundant number, since it is smaller than the sum of its proper divisors (350327160).

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

148805640 is a wasteful number, since it uses less digits than its factorization.

148805640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 148805640 is about 12198.5917219981. The cubic root of 148805640 is about 529.9153062721.

The spelling of 148805640 in words is "one hundred forty-eight million, eight hundred five thousand, six hundred forty".