143268840 has 384 divisors, whose sum is σ = 575527680. Its totient is φ = 30666240.

The previous prime is 143268823. The next prime is 143268857. The reversal of 143268840 is 48862341.

It is an interprime number because it is at equal distance from previous prime (143268823) and next prime (143268857).

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 = 143268795 and 143268804.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6229069 + ... + 6229091.

It is an arithmetic number, because the mean of its divisors is an integer number (1498770).

Almost surely, 2^143268840 is an apocalyptic number.

143268840 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 143268840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287763840).

143268840 is an abundant number, since it is smaller than the sum of its proper divisors (432258840).

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

143268840 is a wasteful number, since it uses less digits than its factorization.

143268840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 143268840 is about 11969.4962300007. The cubic root of 143268840 is about 523.2596521779.

The spelling of 143268840 in words is "one hundred forty-three million, two hundred sixty-eight thousand, eight hundred forty".