143894380 has 72 divisors (see below), whose sum is σ = 353354400. Its totient is φ = 49077504.

The previous prime is 143894357. The next prime is 143894389. The reversal of 143894380 is 83498341.

143894380 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143894389) 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, 351616 + ... + 352024.

It is an arithmetic number, because the mean of its divisors is an integer number (4907700).

Almost surely, 2^143894380 is an apocalyptic number.

143894380 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 143894380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176677200).

143894380 is an abundant number, since it is smaller than the sum of its proper divisors (209460020).

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

143894380 is a wasteful number, since it uses less digits than its factorization.

143894380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 143894380 is about 11995.5983593983. The cubic root of 143894380 is about 524.0200980967.

It can be divided in two parts, 14389 and 4380, that added together give a square (18769 = 137²).

The spelling of 143894380 in words is "one hundred forty-three million, eight hundred ninety-four thousand, three hundred eighty".