28377685 has 8 divisors (see below), whose sum is σ = 38918016. Its totient is φ = 19458960.

The previous prime is 28377677. The next prime is 28377691. The reversal of 28377685 is 58677382.

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

It is not a de Polignac number, because 28377685 - 2³ = 28377677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405361 + ... + 405430.

It is an arithmetic number, because the mean of its divisors is an integer number (4864752).

Almost surely, 2^28377685 is an apocalyptic number.

It is an amenable number.

28377685 is a deficient number, since it is larger than the sum of its proper divisors (10540331).

28377685 is an equidigital number, since it uses as much as digits as its factorization.

28377685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810803.

The product of its digits is 564480, while the sum is 46.

The square root of 28377685 is about 5327.0709587915. The cubic root of 28377685 is about 305.0181302490.

The spelling of 28377685 in words is "twenty-eight million, three hundred seventy-seven thousand, six hundred eighty-five".