28946775 has 48 divisors (see below), whose sum is σ = 56246400. Its totient is φ = 12950400.

The previous prime is 28946773. The next prime is 28946789. The reversal of 28946775 is 57764982.

28946775 = T₂₄₉ + T₂₅₀ + ... + T₅₇₃.

It is not a de Polignac number, because 28946775 - 2¹ = 28946773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28946773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9376 + ... + 12074.

It is an arithmetic number, because the mean of its divisors is an integer number (1171800).

Almost surely, 2^28946775 is an apocalyptic number.

28946775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28946775 is a deficient number, since it is larger than the sum of its proper divisors (27299625).

28946775 is a wasteful number, since it uses less digits than its factorization.

28946775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736 (or 2731 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 28946775 is about 5380.2207203794. The cubic root of 28946775 is about 307.0436087684.

It can be divided in two parts, 2894 and 6775, that added together give a palindrome (9669).

The spelling of 28946775 in words is "twenty-eight million, nine hundred forty-six thousand, seven hundred seventy-five".