28146723 has 16 divisors (see below), whose sum is σ = 41040000. Its totient is φ = 17017280.

The previous prime is 28146721. The next prime is 28146731. The reversal of 28146723 is 32764182.

It is a cyclic number.

It is not a de Polignac number, because 28146723 - 2¹ = 28146721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (28146721) 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, 18028 + ... + 19526.

It is an arithmetic number, because the mean of its divisors is an integer number (2565000).

Almost surely, 2^28146723 is an apocalyptic number.

28146723 is a deficient number, since it is larger than the sum of its proper divisors (12893277).

28146723 is a wasteful number, since it uses less digits than its factorization.

28146723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082.

The product of its digits is 16128, while the sum is 33.

The square root of 28146723 is about 5305.3485276653. The cubic root of 28146723 is about 304.1883751400.

The spelling of 28146723 in words is "twenty-eight million, one hundred forty-six thousand, seven hundred twenty-three".