73007128 has 8 divisors (see below), whose sum is σ = 136888380. Its totient is φ = 36503560.

The previous prime is 73007117. The next prime is 73007161. The reversal of 73007128 is 82170037.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 73007096 and 73007105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4562938 + ... + 4562953.

Almost surely, 2^73007128 is an apocalyptic number.

It is an amenable number.

73007128 is a deficient number, since it is larger than the sum of its proper divisors (63881252).

73007128 is a wasteful number, since it uses less digits than its factorization.

73007128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9125897 (or 9125893 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 73007128 is about 8544.4208697840. The cubic root of 73007128 is about 417.9475220857.

The spelling of 73007128 in words is "seventy-three million, seven thousand, one hundred twenty-eight".