28497735 has 24 divisors (see below), whose sum is σ = 56453280. Its totient is φ = 13027392.

The previous prime is 28497719. The next prime is 28497737. The reversal of 28497735 is 53779482.

It is not a de Polignac number, because 28497735 - 2⁴ = 28497719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28497737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44920 + ... + 45549.

It is an arithmetic number, because the mean of its divisors is an integer number (2352220).

Almost surely, 2^28497735 is an apocalyptic number.

28497735 is a deficient number, since it is larger than the sum of its proper divisors (27955545).

28497735 is a wasteful number, since it uses less digits than its factorization.

28497735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90487 (or 90484 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 28497735 is about 5338.3269851143. The cubic root of 28497735 is about 305.4476451025.

The spelling of 28497735 in words is "twenty-eight million, four hundred ninety-seven thousand, seven hundred thirty-five".