28488430 has 32 divisors (see below), whose sum is σ = 54813024. Its totient is φ = 10622976.

The previous prime is 28488419. The next prime is 28488437. The reversal of 28488430 is 3488482.

It is a self number, because there is not a number n which added to its sum of digits gives 28488430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18469 + ... + 19951.

It is an arithmetic number, because the mean of its divisors is an integer number (1712907).

Almost surely, 2^28488430 is an apocalyptic number.

28488430 is a deficient number, since it is larger than the sum of its proper divisors (26324594).

28488430 is a wasteful number, since it uses less digits than its factorization.

28488430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620.

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 28488430 is about 5337.4553862304. The cubic root of 28488430 is about 305.4143968492.

The spelling of 28488430 in words is "twenty-eight million, four hundred eighty-eight thousand, four hundred thirty".