28477075 has 12 divisors (see below), whose sum is σ = 38522088. Its totient is φ = 20710400.

The previous prime is 28477073. The next prime is 28477093. The reversal of 28477075 is 57077482.

It is not a de Polignac number, because 28477075 - 2¹ = 28477073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28477073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51502 + ... + 52051.

It is an arithmetic number, because the mean of its divisors is an integer number (3210174).

Almost surely, 2^28477075 is an apocalyptic number.

28477075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28477075 is a deficient number, since it is larger than the sum of its proper divisors (10045013).

28477075 is a wasteful number, since it uses less digits than its factorization.

28477075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103574 (or 103569 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 28477075 is about 5336.3915710900. The cubic root of 28477075 is about 305.3738138086.

The spelling of 28477075 in words is "twenty-eight million, four hundred seventy-seven thousand, seventy-five".