73000143 has 16 divisors (see below), whose sum is σ = 108979200. Its totient is φ = 48292920.

The previous prime is 73000099. The next prime is 73000153. The reversal of 73000143 is 34100037.

It is not a de Polignac number, because 73000143 - 2¹³ = 72991951 is a prime.

73000143 is a modest number, since divided by 143 gives 73 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73000153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6783 + ... + 13856.

It is an arithmetic number, because the mean of its divisors is an integer number (6811200).

Almost surely, 2^73000143 is an apocalyptic number.

73000143 is a deficient number, since it is larger than the sum of its proper divisors (35979057).

73000143 is a wasteful number, since it uses less digits than its factorization.

73000143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20779 (or 20773 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 73000143 is about 8544.0121137555. The cubic root of 73000143 is about 417.9341925354.

The spelling of 73000143 in words is "seventy-three million, one hundred forty-three", and thus it is an aban number.