28820603 has 8 divisors (see below), whose sum is σ = 33308640. Its totient is φ = 24425280.

The previous prime is 28820569. The next prime is 28820629. The reversal of 28820603 is 30602882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28820603 - 2⁸ = 28820347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28820683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22508 + ... + 23753.

It is an arithmetic number, because the mean of its divisors is an integer number (4163580).

Almost surely, 2^28820603 is an apocalyptic number.

28820603 is a deficient number, since it is larger than the sum of its proper divisors (4488037).

28820603 is an equidigital number, since it uses as much as digits as its factorization.

28820603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46357.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28820603 is about 5368.4823740048. The cubic root of 28820603 is about 306.5968493919.

It can be divided in two parts, 28820 and 603, that multiplied together give a triangular number (17378460 = T₅₈₉₅).

The spelling of 28820603 in words is "twenty-eight million, eight hundred twenty thousand, six hundred three".