73002040 has 32 divisors (see below), whose sum is σ = 164591280. Its totient is φ = 29140992.

The previous prime is 73002031. The next prime is 73002053. The reversal of 73002040 is 4020037.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21499 + ... + 24661.

Almost surely, 2^73002040 is an apocalyptic number.

It is an amenable number.

73002040 is an abundant number, since it is smaller than the sum of its proper divisors (91589240).

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

73002040 is a wasteful number, since it uses less digits than its factorization.

73002040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751 (or 3747 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 73002040 is about 8544.1231264536. The cubic root of 73002040 is about 417.9378126849.

Adding to 73002040 its reverse (4020037), we get a palindrome (77022077).

The spelling of 73002040 in words is "seventy-three million, two thousand, forty".