73428791 has 2 divisors, whose sum is σ = 73428792. Its totient is φ = 73428790.

The previous prime is 73428769. The next prime is 73428809. The reversal of 73428791 is 19782437.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73428791 - 2⁶ = 73428727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73428701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36714395 + 36714396.

It is an arithmetic number, because the mean of its divisors is an integer number (36714396).

Almost surely, 2^73428791 is an apocalyptic number.

73428791 is a deficient number, since it is larger than the sum of its proper divisors (1).

73428791 is an equidigital number, since it uses as much as digits as its factorization.

73428791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 73428791 is about 8569.0601001510. The cubic root of 73428791 is about 418.7506162908.

The spelling of 73428791 in words is "seventy-three million, four hundred twenty-eight thousand, seven hundred ninety-one".