28488701 has 8 divisors (see below), whose sum is σ = 29700000. Its totient is φ = 27292720.

The previous prime is 28488653. The next prime is 28488703. The reversal of 28488701 is 10788482.

It is a happy number.

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 28488701 - 2⁶ = 28488637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50 + ... + 7548.

It is an arithmetic number, because the mean of its divisors is an integer number (3712500).

Almost surely, 2^28488701 is an apocalyptic number.

It is an amenable number.

28488701 is a deficient number, since it is larger than the sum of its proper divisors (1211299).

28488701 is a wasteful number, since it uses less digits than its factorization.

28488701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7659.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 28488701 is about 5337.4807727991. The cubic root of 28488701 is about 305.4153652779.

The spelling of 28488701 in words is "twenty-eight million, four hundred eighty-eight thousand, seven hundred one".