28345377 has 8 divisors (see below), whose sum is σ = 39013120. Its totient is φ = 18287280.

The previous prime is 28345363. The next prime is 28345381. The reversal of 28345377 is 77354382.

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

It is not a de Polignac number, because 28345377 - 2¹² = 28341281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28345327) 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, 152302 + ... + 152487.

It is an arithmetic number, because the mean of its divisors is an integer number (4876640).

Almost surely, 2^28345377 is an apocalyptic number.

It is an amenable number.

28345377 is a deficient number, since it is larger than the sum of its proper divisors (10667743).

28345377 is a wasteful number, since it uses less digits than its factorization.

28345377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304823.

The product of its digits is 141120, while the sum is 39.

The square root of 28345377 is about 5324.0376595212. The cubic root of 28345377 is about 304.9023318918.

The spelling of 28345377 in words is "twenty-eight million, three hundred forty-five thousand, three hundred seventy-seven".