143561376 has 144 divisors (see below), whose sum is σ = 487226880. Its totient is φ = 41005440.

The previous prime is 143561371. The next prime is 143561387. The reversal of 143561376 is 673165341.

143561376 is a `hidden beast` number, since 1 + 4 + 35 + 613 + 7 + 6 = 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 self number, because there is not a number n which added to its sum of digits gives 143561376.

It is not an unprimeable number, because it can be changed into a prime (143561371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40641 + ... + 44031.

It is an arithmetic number, because the mean of its divisors is an integer number (3383520).

Almost surely, 2^143561376 is an apocalyptic number.

143561376 is a gapful number since it is divisible by the number (16) 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 143561376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243613440).

143561376 is an abundant number, since it is smaller than the sum of its proper divisors (343665504).

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

143561376 is a wasteful number, since it uses less digits than its factorization.

143561376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 3403 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 143561376 is about 11981.7100615897. The cubic root of 143561376 is about 523.6155523610.

The spelling of 143561376 in words is "one hundred forty-three million, five hundred sixty-one thousand, three hundred seventy-six".