148285440 has 144 divisors (see below), whose sum is σ = 514250100. Its totient is φ = 39518208.

The previous prime is 148285433. The next prime is 148285483. The reversal of 148285440 is 44582841.

It can be written as a sum of positive squares in 2 ways, for example, as 139428864 + 8856576 = 11808^2 + 2976^2 .

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 = 148285395 and 148285404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91356 + ... + 92964.

Almost surely, 2^148285440 is an apocalyptic number.

148285440 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 148285440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257125050).

148285440 is an abundant number, since it is smaller than the sum of its proper divisors (365964660).

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

148285440 is a wasteful number, since it uses less digits than its factorization.

148285440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 148285440 is about 12177.2509212876. The cubic root of 148285440 is about 529.2970864462.

The spelling of 148285440 in words is "one hundred forty-eight million, two hundred eighty-five thousand, four hundred forty".