143888040 has 48 divisors (see below), whose sum is σ = 467637300. Its totient is φ = 38370048.

The previous prime is 143888029. The next prime is 143888047. The reversal of 143888040 is 40888341.

It can be written as a sum of positive squares in 2 ways, for example, as 135349956 + 8538084 = 11634^2 + 2922^2 .

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 = 143887986 and 143888004.

It is not an unprimeable number, because it can be changed into a prime (143888047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199485 + ... + 200204.

Almost surely, 2^143888040 is an apocalyptic number.

143888040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143888040 is an abundant number, since it is smaller than the sum of its proper divisors (323749260).

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

143888040 is a wasteful number, since it uses less digits than its factorization.

143888040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399706 (or 399699 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 143888040 is about 11995.3340928880. The cubic root of 143888040 is about 524.0124018586.

The spelling of 143888040 in words is "one hundred forty-three million, eight hundred eighty-eight thousand, forty".