28761490 has 16 divisors (see below), whose sum is σ = 53441280. Its totient is φ = 11133360.

The previous prime is 28761449. The next prime is 28761517. The reversal of 28761490 is 9416782.

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, 46080 + ... + 46699.

It is an arithmetic number, because the mean of its divisors is an integer number (3340080).

Almost surely, 2^28761490 is an apocalyptic number.

28761490 is a deficient number, since it is larger than the sum of its proper divisors (24679790).

28761490 is a wasteful number, since it uses less digits than its factorization.

28761490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92817.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 28761490 is about 5362.9739883762. The cubic root of 28761490 is about 306.3870889787.

The spelling of 28761490 in words is "twenty-eight million, seven hundred sixty-one thousand, four hundred ninety".