73428771 has 16 divisors (see below), whose sum is σ = 105921536. Its totient is φ = 44978976.

The previous prime is 73428769. The next prime is 73428791. The reversal of 73428771 is 17782437.

It is not a de Polignac number, because 73428771 - 2¹ = 73428769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73428701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4476 + ... + 12918.

It is an arithmetic number, because the mean of its divisors is an integer number (6620096).

Almost surely, 2^73428771 is an apocalyptic number.

73428771 is a deficient number, since it is larger than the sum of its proper divisors (32492765).

73428771 is a wasteful number, since it uses less digits than its factorization.

73428771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8682.

The product of its digits is 65856, while the sum is 39.

The square root of 73428771 is about 8569.0589331618. The cubic root of 73428771 is about 418.7505782720.

The spelling of 73428771 in words is "seventy-three million, four hundred twenty-eight thousand, seven hundred seventy-one".