73143900 has 108 divisors (see below), whose sum is σ = 232879192. Its totient is φ = 19198080.

The previous prime is 73143899. The next prime is 73143907. The reversal of 73143900 is 934137.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73143907) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 59694 + ... + 60906.

Almost surely, 2^73143900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73143900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116439596).

73143900 is an abundant number, since it is smaller than the sum of its proper divisors (159735292).

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

73143900 is a wasteful number, since it uses less digits than its factorization.

73143900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 73143900 is about 8552.4207099511. The cubic root of 73143900 is about 418.2083544196.

The spelling of 73143900 in words is "seventy-three million, one hundred forty-three thousand, nine hundred".