73020413 has 4 divisors (see below), whose sum is σ = 73038240. Its totient is φ = 73002588.

The previous prime is 73020391. The next prime is 73020433. The reversal of 73020413 is 31402037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73020413 - 2¹⁶ = 72954877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73020433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656 + ... + 12102.

It is an arithmetic number, because the mean of its divisors is an integer number (18259560).

Almost surely, 2^73020413 is an apocalyptic number.

It is an amenable number.

73020413 is a deficient number, since it is larger than the sum of its proper divisors (17827).

73020413 is a wasteful number, since it uses less digits than its factorization.

73020413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 73020413 is about 8545.1982422879. The cubic root of 73020413 is about 417.9728716474.

The spelling of 73020413 in words is "seventy-three million, twenty thousand, four hundred thirteen".