28433825 has 24 divisors (see below), whose sum is σ = 41164032. Its totient is φ = 19077120.

The previous prime is 28433813. The next prime is 28433831. The reversal of 28433825 is 52833482.

It is not a de Polignac number, because 28433825 - 2¹⁰ = 28432801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6497 + ... + 9953.

It is an arithmetic number, because the mean of its divisors is an integer number (1715168).

Almost surely, 2^28433825 is an apocalyptic number.

28433825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28433825 is a deficient number, since it is larger than the sum of its proper divisors (12730207).

28433825 is a wasteful number, since it uses less digits than its factorization.

28433825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521 (or 3516 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 28433825 is about 5332.3376674776. The cubic root of 28433825 is about 305.2191384025.

The spelling of 28433825 in words is "twenty-eight million, four hundred thirty-three thousand, eight hundred twenty-five".