28413028 has 24 divisors (see below), whose sum is σ = 57153600. Its totient is φ = 12106848.

The previous prime is 28412977. The next prime is 28413029. The reversal of 28413028 is 82031482.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 28412987 and 28413005.

It is not an unprimeable number, because it can be changed into a prime (28413029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2178 + ... + 7846.

It is an arithmetic number, because the mean of its divisors is an integer number (2381400).

Almost surely, 2^28413028 is an apocalyptic number.

28413028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28413028 is an abundant number, since it is smaller than the sum of its proper divisors (28740572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28413028 is a wasteful number, since it uses less digits than its factorization.

28413028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859 (or 5857 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 28413028 is about 5330.3872279601. The cubic root of 28413028 is about 305.1447060361.

The spelling of 28413028 in words is "twenty-eight million, four hundred thirteen thousand, twenty-eight".