143920728 has 48 divisors (see below), whose sum is σ = 445470480. Its totient is φ = 41120064.

The previous prime is 143920727. The next prime is 143920747. The reversal of 143920728 is 827029341.

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 = 143920692 and 143920701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143920723) 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, 142275 + ... + 143282.

It is an arithmetic number, because the mean of its divisors is an integer number (9280635).

Almost surely, 2^143920728 is an apocalyptic number.

143920728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

143920728 is an abundant number, since it is smaller than the sum of its proper divisors (301549752).

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

143920728 is a wasteful number, since it uses less digits than its factorization.

143920728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285576 (or 285569 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 143920728 is about 11996.6965452995. The cubic root of 143920728 is about 524.0520799780.

The spelling of 143920728 in words is "one hundred forty-three million, nine hundred twenty thousand, seven hundred twenty-eight".