73428191 has 8 divisors (see below), whose sum is σ = 74980080. Its totient is φ = 71892352.

The previous prime is 73428169. The next prime is 73428197. The reversal of 73428191 is 19182437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73428191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73428197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5465 + ... + 13293.

It is an arithmetic number, because the mean of its divisors is an integer number (9372510).

Almost surely, 2^73428191 is an apocalyptic number.

73428191 is a deficient number, since it is larger than the sum of its proper divisors (1551889).

73428191 is a wasteful number, since it uses less digits than its factorization.

73428191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8025.

The product of its digits is 12096, while the sum is 35.

The square root of 73428191 is about 8569.0250904056. The cubic root of 73428191 is about 418.7494757252.

The spelling of 73428191 in words is "seventy-three million, four hundred twenty-eight thousand, one hundred ninety-one".