73437021 has 12 divisors (see below), whose sum is σ = 121229472. Its totient is φ = 41963976.

The previous prime is 73437011. The next prime is 73437029. The reversal of 73437021 is 12073437.

It is not a de Polignac number, because 73437021 - 2⁹ = 73436509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73437029) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 582771 + ... + 582896.

It is an arithmetic number, because the mean of its divisors is an integer number (10102456).

Almost surely, 2^73437021 is an apocalyptic number.

It is an amenable number.

73437021 is a deficient number, since it is larger than the sum of its proper divisors (47792451).

73437021 is a wasteful number, since it uses less digits than its factorization.

73437021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165680 (or 1165677 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 73437021 is about 8569.5403027234. The cubic root of 73437021 is about 418.7662604215.

The spelling of 73437021 in words is "seventy-three million, four hundred thirty-seven thousand, twenty-one".