28473020 has 24 divisors (see below), whose sum is σ = 62941200. Its totient is φ = 10789632.

The previous prime is 28472989. The next prime is 28473037. The reversal of 28473020 is 2037482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37085 + ... + 37844.

It is an arithmetic number, because the mean of its divisors is an integer number (2622550).

Almost surely, 2^28473020 is an apocalyptic number.

28473020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28473020 is an abundant number, since it is smaller than the sum of its proper divisors (34468180).

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

28473020 is a wasteful number, since it uses less digits than its factorization.

28473020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74957 (or 74955 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 28473020 is about 5336.0116191778. The cubic root of 28473020 is about 305.3593185278.

The spelling of 28473020 in words is "twenty-eight million, four hundred seventy-three thousand, twenty".