28746825 has 12 divisors (see below), whose sum is σ = 47528208. Its totient is φ = 15331600.

The previous prime is 28746811. The next prime is 28746869. The reversal of 28746825 is 52864782.

28746825 = T₁₀₈ + T₁₀₉ + ... + T₅₅₇.

It is a happy number.

It is not a de Polignac number, because 28746825 - 2⁹ = 28746313 is a prime.

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, 191571 + ... + 191720.

It is an arithmetic number, because the mean of its divisors is an integer number (3960684).

Almost surely, 2^28746825 is an apocalyptic number.

28746825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28746825 is a deficient number, since it is larger than the sum of its proper divisors (18781383).

28746825 is a wasteful number, since it uses less digits than its factorization.

28746825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383304 (or 383299 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 28746825 is about 5361.6065689306. The cubic root of 28746825 is about 306.3350062512.

The spelling of 28746825 in words is "twenty-eight million, seven hundred forty-six thousand, eight hundred twenty-five".