73000432 has 40 divisors (see below), whose sum is σ = 149494400. Its totient is φ = 34437312.

The previous prime is 73000427. The next prime is 73000439. The reversal of 73000432 is 23400037.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73000439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133183 + ... + 133729.

It is an arithmetic number, because the mean of its divisors is an integer number (3737360).

Almost surely, 2^73000432 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 73000432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74747200).

73000432 is an abundant number, since it is smaller than the sum of its proper divisors (76493968).

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

73000432 is a wasteful number, since it uses less digits than its factorization.

73000432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 73000432 is about 8544.0290261679. The cubic root of 73000432 is about 417.9347440541.

Adding to 73000432 its reverse (23400037), we get a palindrome (96400469).

The spelling of 73000432 in words is "seventy-three million, four hundred thirty-two", and thus it is an aban number.