28982775 has 12 divisors (see below), whose sum is σ = 47918312. Its totient is φ = 15457440.

The previous prime is 28982753. The next prime is 28982791. The reversal of 28982775 is 57728982.

It is not a de Polignac number, because 28982775 - 2⁶ = 28982711 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 11 ways as a sum of consecutive naturals, for example, 193144 + ... + 193293.

Almost surely, 2^28982775 is an apocalyptic number.

28982775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28982775 is a deficient number, since it is larger than the sum of its proper divisors (18935537).

28982775 is a wasteful number, since it uses less digits than its factorization.

28982775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386450 (or 386445 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 28982775 is about 5383.5652684815. The cubic root of 28982775 is about 307.1708421795.

The spelling of 28982775 in words is "twenty-eight million, nine hundred eighty-two thousand, seven hundred seventy-five".