28177023 has 16 divisors (see below), whose sum is σ = 43013376. Its totient is φ = 16072320.

The previous prime is 28177021. The next prime is 28177027. The reversal of 28177023 is 32077182.

It is not a de Polignac number, because 28177023 - 2¹ = 28177021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28177021) 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, 17740 + ... + 19262.

It is an arithmetic number, because the mean of its divisors is an integer number (2688336).

Almost surely, 2^28177023 is an apocalyptic number.

28177023 is a deficient number, since it is larger than the sum of its proper divisors (14836353).

28177023 is a wasteful number, since it uses less digits than its factorization.

28177023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 28177023 is about 5308.2033683724. The cubic root of 28177023 is about 304.2974891140.

The spelling of 28177023 in words is "twenty-eight million, one hundred seventy-seven thousand, twenty-three".