28535475 has 24 divisors (see below), whose sum is σ = 47360560. Its totient is φ = 15160320.

The previous prime is 28535471. The next prime is 28535513. The reversal of 28535475 is 57453582.

It is not a de Polignac number, because 28535475 - 2² = 28535471 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28535471) 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, 24711 + ... + 25839.

Almost surely, 2^28535475 is an apocalyptic number.

28535475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28535475 is a deficient number, since it is larger than the sum of its proper divisors (18825085).

28535475 is a wasteful number, since it uses less digits than its factorization.

28535475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 1474 counting only the distinct ones).

The product of its digits is 168000, while the sum is 39.

The square root of 28535475 is about 5341.8606309038. The cubic root of 28535475 is about 305.5824220025.

The spelling of 28535475 in words is "twenty-eight million, five hundred thirty-five thousand, four hundred seventy-five".