28890610 has 32 divisors (see below), whose sum is σ = 60279552. Its totient is φ = 9764160.

The previous prime is 28890593. The next prime is 28890611. The reversal of 28890610 is 1609882.

It is a super-3 number, since 3×28890610³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28890611) 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, 2064 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (1883736).

Almost surely, 2^28890610 is an apocalyptic number.

28890610 is an abundant number, since it is smaller than the sum of its proper divisors (31388942).

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

28890610 is a wasteful number, since it uses less digits than its factorization.

28890610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5898.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 28890610 is about 5374.9986046510. The cubic root of 28890610 is about 306.8448961334.

The spelling of 28890610 in words is "twenty-eight million, eight hundred ninety thousand, six hundred ten".