28746090 has 80 divisors (see below), whose sum is σ = 80707968. Its totient is φ = 7327584.

The previous prime is 28746089. The next prime is 28746101. The reversal of 28746090 is 9064782.

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 39 ways as a sum of consecutive naturals, for example, 17859 + ... + 19401.

Almost surely, 2^28746090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28746090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40353984).

28746090 is an abundant number, since it is smaller than the sum of its proper divisors (51961878).

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

28746090 is a wasteful number, since it uses less digits than its factorization.

28746090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 28746090 is about 5361.5380256042. The cubic root of 28746090 is about 306.3323954336.

The spelling of 28746090 in words is "twenty-eight million, seven hundred forty-six thousand, ninety".