28987610 has 8 divisors (see below), whose sum is σ = 52177716. Its totient is φ = 11595040.

The previous prime is 28987603. The next prime is 28987639. The reversal of 28987610 is 1678982.

It can be written as a sum of positive squares in 2 ways, for example, as 28079401 + 908209 = 5299^2 + 953^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449371 + ... + 1449390.

Almost surely, 2^28987610 is an apocalyptic number.

28987610 is a deficient number, since it is larger than the sum of its proper divisors (23190106).

28987610 is a wasteful number, since it uses less digits than its factorization.

28987610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898768.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 28987610 is about 5384.0143016155. The cubic root of 28987610 is about 307.1879223067.

The spelling of 28987610 in words is "twenty-eight million, nine hundred eighty-seven thousand, six hundred ten".